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Edmund scientific telescopereview

The weekly airborne images are hyperspectral, meaning they contain many more spectral bands of discrete wavelengths than a typical spaceborne satellite image. At NOAA GLERL, we use the Resonon Pika II and the Pika L hyperspectral camera, otherwise known as a hyperspectral imager. Images from the Pika II have 240 bands and the Pika L has 281 bands. These bands span the range of 400 to 1,000 nanometers, where the visible range that the human eye sees is from about 380 to 750 nanometers. The aircraft usually flies at an altitude that allows researchers to obtain images that are 1-meter to sub 1-meter pixel size, also called the spatial resolution. Hyperspectral imagers offer a finer pixel size, depending on the altitude flown, compared to the typical 1-kilometer spatial resolution from multi-spectral spaceborne satellites. They also offer many more bands that can be used to differentiate between many different types of spectral features, including algal groups. Due to cloud cover, typical spaceborne satellites that are multispectral are only capable of capturing 20-30 images in the spring-fall period when blooms are present. Hyperspectral images are obtained even on cloudy days, as the plane is able to fly under the clouds. All of these benefits of hyperspectral imagers offer water intake managers a key resource for identifying the type and location of algal blooms near water intake systems.

Edmund scientific telescopefor sale

As for me, it seems hard to believe by today's perspective, but there wasabsolutely no way my family could afford $79.95 for a telescope. Not happenin'.However, my late father asked around, and it turned out that someone he knewthrough the TV station where he worked at (as a broadcast engineer) had boughtthe PJ for his kid. The kid, however, had wanted a GO CART, NOT A TELESCOPE,and was pitching a duck-fit. This gentleman agreed to sell the PJ to us for 50bucks. This was still a lot of money, but gathering up all the dough I'd gottenfor the last several years from aunts and uncles and grandmothers, etc. onbirthdays and Christmases, and with a substantial contribution from my dad, wewere able to swing it. Just barely. In fact, I believe the person allowed us topay it off in several monthly installments. Once I had the scope in my hot little (12 year-old) hands, I proceeded to justuse the hell out of it. I took first light on Saturn, and it was a revelation.Despite the almost closed aspect of the rings, it was beautiful...so muchbetter than my Tasco 3" reflector, which had spherical aberration similar tothat of a shaving mirror. Or the 6" f/12 atm scope I'd borrowed. The mirror waspretty good (albeit with a deteriorating silver coating), but the mount (an oldlight stand) and the heavy tube (riveted steel like a thick stove pipe) andlack of finder made it a challenge to get the Moon in the field. Back in thosedays, when suburbia was less light polluted (if not exactly dark, even in1966), the PJ did a fine, fine job on lots of things. The whole Messier wasconquered (though I really had to convince myself that I'd seen M33 and M74 andM101!).In retrospect, I think my Dad had almost as much fun with the PJ as I did, andit wasn't long before he was taking Moon pictures with it. Rather successfullytoo (don't know HOW he got that giant old Exacta SLR of his balanced on it).That's probably the main reason I still hold onto the scope and remember thosemany nights out with it so fondly.Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

The kellner Edmund shipped with these scopes (black barrel/housing marked '1"')was made up from uncoated war-surplus lens elements.

I had to take the mirror out of the Edmund to clean it, (which worked prettywell actually), and now that its back in need to collimate it again.However now that i own a C-8 and the Televue Pronto, i havent actually hadthe Edmund out except occasionally.I think i have the complete set of instructions for it around somewhere too. -jcp-

Edmund ScientificAstroscantelescopereview

I got one in 1973 (birthday present). Good optics and mechanics for thesize, though the equatorial mount is rather undersized. I still have it,though it hasn't been out for a while - my XT6 fills the "quick look"niche these days. But even though I don't use it much, I can't bear topart with it - too many memories, over too much time.This is the scope I first split Epsilon Lyrae with, and M42/43, and manyothers. The next Mars opposition I was out sketching every clear night.M57, Albireo, Mizar, . . . I think I'll take it out to my back yard thenext clear night and see what it can do again.The eyepiece is, most likely, the 25 mm Kellner that shipped with it. OKfor a Kellner of the era, I suppose - but a cheap Chinese import Plosslwill have better coatings and a wider field of view. If this is yourfirst scope, you may want to spring for a few good basic eyepieces fromsome place like Hands On Optics or Orion. Clear skies!Dana-- ------------------------+--------------------------------------------------Dana Crom / "Malt has done more than Milton canda...@pacbell.net / To justify God's ways to man" A. E. HousmanSan Jose, California / "Doubtless due to a wider audience" DLC

> Hi,> Add me to the list of a former 'PJ' owners.> > I was saving my coins for months to buy this 4 1/4" Newt. We lived in> North Philadelphia in 1962. One snowy and icy Saturday morning, I was> ready. My dad slipped and skidded the 40 miles to Barrington. When we> arrived at Edmunds Scientific, I felt like I was in heaven. We paid> for the scope and loaded it into the 59' Chevy and slipped and skidded> back home. I was concerned that we'd get into a wreck and damage the> 'PJ'. It was about 2 weeks before it cleared!> > Al M>

Thanks for the reply.Palomar Jr. is an interesting name for a telescope.There is a finder scope that seems to focus ok but there seems to be pitting or decades of dust on the its lens. The mirrors seem to be in nice shape (the tube was covered) and all I have is one old lens that looks as it has seen a lot of use. Any idea of what the focal length might be? It looks to be about 1000mm? A new finder scope and some new eyepieces are in the planning stages. George

In 2015, NOAA GLERL began a weekly airborne campaign to assist in improvements to the HAB forecast for cyanobacteria harmful algal blooms in the western basin of Lake Erie. This airborne campaign is ongoing in conjunction with our weekly Lake Erie monitoring and biweekly monitoring in Saginaw Bay.

Peace,Rod MolliseAuthor of _Choosing and Using a Schmidt Cassegrain Telescope_Like SCTs and MCTs?Check-out sct-user, the mailing list for CAT fanciers!Goto

Edmund ScientificAstroscan manual

Clear skies!Dana-- ------------------------+--------------------------------------------------Dana Crom / "Malt has done more than Milton canda...@pacbell.net / To justify God's ways to man" A. E. HousmanSan Jose, California / "Doubtless due to a wider audience" DLC

In retrospect, I think my Dad had almost as much fun with the PJ as I did, andit wasn't long before he was taking Moon pictures with it. Rather successfullytoo (don't know HOW he got that giant old Exacta SLR of his balanced on it).That's probably the main reason I still hold onto the scope and remember thosemany nights out with it so fondly.Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

Boy, does this bring back memories--I still have my first telescope, a 3",f/10 Edmund "Space Conqueror" reflector, complete with its 0.917" Ramsden(microscope) eyepieces and fixed equatorial fork mount on a hardwoodtripod. It was purchased in 1958 for $29.95. I remember seeing the"hole" in M-57 quite distinctly. The mirrors are still in surprisinglygood condition.Dale

Edmund Scientificcatalog

> Hi George,> > It sure sounds like a 'Palomar Jr.' on a pedestal instead of a tripod.> It's a 4.25" f/10 spherical mirrored reflector and cost $74.95 FOB> Barrington N.J. circa 1960 (at least the tripod mounted one) and I remember> exactly! I saved up for a year and bought one then...it's still in the> basement and still gets used on occasion. The GEM (German Equatorial Mount)> leaves a bit to be desired, but it works reasonably well. Does yours have> the tiny finder scope? Removing that and replacing it with something> functional was my first modification.> > Dave Jessie

One night, I got up at 1AM to observe something. I got the PJ outsideand observed for about one hour. Unbeknownst to me, my dad hadawakened to check security and replaced the chair at the door that Iused. I couldn't get back in and observed til sun-up. I was one tiredpuppy in school that day!Al Mrmol...@aol.com (Rod Mollise) wrote in message news:<20030125110608...@mb-cf.aol.com>...

Hi George,It sure sounds like a 'Palomar Jr.' on a pedestal instead of a tripod.It's a 4.25" f/10 spherical mirrored reflector and cost $74.95 FOBBarrington N.J. circa 1960 (at least the tripod mounted one) and I rememberexactly! I saved up for a year and bought one then...it's still in thebasement and still gets used on occasion. The GEM (German Equatorial Mount)leaves a bit to be desired, but it works reasonably well. Does yours havethe tiny finder scope? Removing that and replacing it with somethingfunctional was my first modification.Dave Jessie

Aerial image take over the same location on Maumee Bay, Lake Erie on August 19, 2019. Credit: Zachary Haslick, Aerial Associates Photography, Inc..

Dave,Thanks for the reply.Palomar Jr. is an interesting name for a telescope.There is a finder scope that seems to focus ok but there seems to be pitting or decades of dust on the its lens. The mirrors seem to be in nice shape (the tube was covered) and all I have is one old lens that looks as it has seen a lot of use. Any idea of what the focal length might be? It looks to be about 1000mm? A new finder scope and some new eyepieces are in the planning stages. George

My dad was a real fanatic of security. He would place chairs againstall the door knobs before bed. We lived in a nice area, BTW.One night, I got up at 1AM to observe something. I got the PJ outsideand observed for about one hour. Unbeknownst to me, my dad hadawakened to check security and replaced the chair at the door that Iused. I couldn't get back in and observed til sun-up. I was one tiredpuppy in school that day!Al Mrmol...@aol.com (Rod Mollise) wrote in message news:<20030125110608...@mb-cf.aol.com>...

Hi Al:Well, what a great story! Actually got it at the store! Amazin'!As for me, it seems hard to believe by today's perspective, but there wasabsolutely no way my family could afford $79.95 for a telescope. Not happenin'.However, my late father asked around, and it turned out that someone he knewthrough the TV station where he worked at (as a broadcast engineer) had boughtthe PJ for his kid. The kid, however, had wanted a GO CART, NOT A TELESCOPE,and was pitching a duck-fit. This gentleman agreed to sell the PJ to us for 50bucks. This was still a lot of money, but gathering up all the dough I'd gottenfor the last several years from aunts and uncles and grandmothers, etc. onbirthdays and Christmases, and with a substantial contribution from my dad, wewere able to swing it. Just barely. In fact, I believe the person allowed us topay it off in several monthly installments. Once I had the scope in my hot little (12 year-old) hands, I proceeded to justuse the hell out of it. I took first light on Saturn, and it was a revelation.Despite the almost closed aspect of the rings, it was beautiful...so muchbetter than my Tasco 3" reflector, which had spherical aberration similar tothat of a shaving mirror. Or the 6" f/12 atm scope I'd borrowed. The mirror waspretty good (albeit with a deteriorating silver coating), but the mount (an oldlight stand) and the heavy tube (riveted steel like a thick stove pipe) andlack of finder made it a challenge to get the Moon in the field. Back in thosedays, when suburbia was less light polluted (if not exactly dark, even in1966), the PJ did a fine, fine job on lots of things. The whole Messier wasconquered (though I really had to convince myself that I'd seen M33 and M74 andM101!).In retrospect, I think my Dad had almost as much fun with the PJ as I did, andit wasn't long before he was taking Moon pictures with it. Rather successfullytoo (don't know HOW he got that giant old Exacta SLR of his balanced on it).That's probably the main reason I still hold onto the scope and remember thosemany nights out with it so fondly.Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

HI Al:What a great memory! As for me, I introduced every single girlfriend during theteenage years to PJ. Turned out he was something of a chick magnet! :-)

Edmund scientific telescopemanual

The hyperspectral images in this collection contain flights over the western basin of Lake Erie, and Saginaw Bay, Lake Huron of the Great Lakes region during the HAB season from typically June until the end of October. Images were acquired from a manned aircraft with a Resonon hyperspectral imaging camera. Each flight has approximately 200-400 images along the flight trajectory that are in band interleave per pixel (.bip) or band interleave per line (.bil) format. The files are in raw binary, radiance values, and reflectance values. The resolution is typically 1 meter or less depending on the altitude that is flown. The flight path covered the Michigan and Ohio drinking water intake locations and also the Cooperative Institute for Great Lakes Research (CIGLR) water quality monitoring stations in western Lake Erie. Each flight took into account the solar zenith angle to minimize sun glint correction. The data are currently in raw and radiance formats that were converted to radiance using the calibration files provided by the manufacturer and no other corrections have been made. The camera is sent annually to be calibrated by the manufacturer. Imagery was collected to monitor harmful algal blooms (HABs) over the western basin of Lake Erie and Saginaw Bay, Lake Huron. Funding for this project was received via the Great Lakes Restoration Initiative (GLRI) from the U.S. Environmental Protection Agency (USEPA).

This is a scope Edmund sold from the 50s into the 70s, and was usually calledthe "Palomar Junior". I still have mine, it being the first serious scope of myown that I got my hands on (1965). What's it like? The mirror is spherical, butat the large focal ratio of this scope, f/10-11, it performs excellently. It iscapable of doing a good job on the planets and the deep sky within the boundsof its 4 inch aperture. The mount, in typical 60s fashion is more "heavy" andless "solid" than it should be. But I love my PJ! BTW, the earlier models had awooden tripod, while the mid-sixties and on examples had a metal pedestalinstead. Some years back, I used this silly old telescope to observe everysingle Messier object from my city location. Fun. Frustrating sometimes, butfun. And I was ultimately successful.Peace,Rod MolliseAuthor of _Choosing and Using a Schmidt Cassegrain Telescope_Like SCTs and MCTs?Check-out sct-user, the mailing list for CAT fanciers!Goto

What a great memory! As for me, I introduced every single girlfriend during theteenage years to PJ. Turned out he was something of a chick magnet! :-)

Edmund Scientific telescopeAstroscan

I have been given an old reflector telescope that I was told had beenproduced by the Edmund Scientific company sometime in the late 50s orearly 60s. The scope had been stored for years and seems to be in niceshape. It is a reflector with what appears to be a 4+ inch mirror andis mounted on a single pipe mount with three legs at the bottom (not atripod) The tube is long and bright white. There is one old eyepiece,looks to be a 1.25 inch size and maybe 35 or 40mm across. Can anyonegive me some info on old Edmund scopes, particulary this one?ThanksGeorge

Hyperspectral imagery to study harmful algal blooms (HABs) of Lake Erie, Lake St. Clair, and Saginaw Bay, Lake Huron of the Great Lakes region (links to NCEI)

Once I had the scope in my hot little (12 year-old) hands, I proceeded to justuse the hell out of it. I took first light on Saturn, and it was a revelation.Despite the almost closed aspect of the rings, it was beautiful...so muchbetter than my Tasco 3" reflector, which had spherical aberration similar tothat of a shaving mirror. Or the 6" f/12 atm scope I'd borrowed. The mirror waspretty good (albeit with a deteriorating silver coating), but the mount (an oldlight stand) and the heavy tube (riveted steel like a thick stove pipe) andlack of finder made it a challenge to get the Moon in the field. Back in thosedays, when suburbia was less light polluted (if not exactly dark, even in1966), the PJ did a fine, fine job on lots of things. The whole Messier wasconquered (though I really had to convince myself that I'd seen M33 and M74 andM101!).In retrospect, I think my Dad had almost as much fun with the PJ as I did, andit wasn't long before he was taking Moon pictures with it. Rather successfullytoo (don't know HOW he got that giant old Exacta SLR of his balanced on it).That's probably the main reason I still hold onto the scope and remember thosemany nights out with it so fondly.Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

I was saving my coins for months to buy this 4 1/4" Newt. We lived inNorth Philadelphia in 1962. One snowy and icy Saturday morning, I wasready. My dad slipped and skidded the 40 miles to Barrington. When wearrived at Edmunds Scientific, I felt like I was in heaven. We paidfor the scope and loaded it into the 59' Chevy and slipped and skiddedback home. I was concerned that we'd get into a wreck and damage the'PJ'. It was about 2 weeks before it cleared!Al Mrmol...@aol.com (Rod Mollise) wrote in message news:<20030124174859...@mb-ml.aol.com>...

-- ------------------------+--------------------------------------------------Dana Crom / "Malt has done more than Milton canda...@pacbell.net / To justify God's ways to man" A. E. HousmanSan Jose, California / "Doubtless due to a wider audience" DLC

These hyperspectral images are now available through the NOAA National Centers for Environmental Information (NCEI) website. The data sets are described and linked to NCEI below.

Palomar Jr. is an interesting name for a telescope.There is a finder scope that seems to focus ok but there seems to be pitting or decades of dust on the its lens. The mirrors seem to be in nice shape (the tube was covered) and all I have is one old lens that looks as it has seen a lot of use. Any idea of what the focal length might be? It looks to be about 1000mm? A new finder scope and some new eyepieces are in the planning stages. George

> Hello,>> I have been given an old reflector telescope that I was told had been> produced by the Edmund Scientific company sometime in the late 50s or

Make that, "Would have coatings." :-)The kellner Edmund shipped with these scopes (black barrel/housing marked '1"')was made up from uncoated war-surplus lens elements.

VintageEdmund Scientific telescope

Well, what a great story! Actually got it at the store! Amazin'!As for me, it seems hard to believe by today's perspective, but there wasabsolutely no way my family could afford $79.95 for a telescope. Not happenin'.However, my late father asked around, and it turned out that someone he knewthrough the TV station where he worked at (as a broadcast engineer) had boughtthe PJ for his kid. The kid, however, had wanted a GO CART, NOT A TELESCOPE,and was pitching a duck-fit. This gentleman agreed to sell the PJ to us for 50bucks. This was still a lot of money, but gathering up all the dough I'd gottenfor the last several years from aunts and uncles and grandmothers, etc. onbirthdays and Christmases, and with a substantial contribution from my dad, wewere able to swing it. Just barely. In fact, I believe the person allowed us topay it off in several monthly installments. Once I had the scope in my hot little (12 year-old) hands, I proceeded to justuse the hell out of it. I took first light on Saturn, and it was a revelation.Despite the almost closed aspect of the rings, it was beautiful...so muchbetter than my Tasco 3" reflector, which had spherical aberration similar tothat of a shaving mirror. Or the 6" f/12 atm scope I'd borrowed. The mirror waspretty good (albeit with a deteriorating silver coating), but the mount (an oldlight stand) and the heavy tube (riveted steel like a thick stove pipe) andlack of finder made it a challenge to get the Moon in the field. Back in thosedays, when suburbia was less light polluted (if not exactly dark, even in1966), the PJ did a fine, fine job on lots of things. The whole Messier wasconquered (though I really had to convince myself that I'd seen M33 and M74 andM101!).In retrospect, I think my Dad had almost as much fun with the PJ as I did, andit wasn't long before he was taking Moon pictures with it. Rather successfullytoo (don't know HOW he got that giant old Exacta SLR of his balanced on it).That's probably the main reason I still hold onto the scope and remember thosemany nights out with it so fondly.Course, in typical amateur astronomer fashion, even then, I was soon looking atthe pictures of the 6 and 8 Space Conguerors in Edmund's catalog. The RV6 alsocaught my eye. But, the 4.25 was it for me for almost 10 years, until Ifinished school, was out on my own, and bought a Cave 8 f/7. Curiously, theCave was sold ages ago (for funds to finance my first Orange Tube C8), but thePJ still has a place of honor here at Chaos Manor South.

It sure sounds like a 'Palomar Jr.' on a pedestal instead of a tripod.It's a 4.25" f/10 spherical mirrored reflector and cost $74.95 FOBBarrington N.J. circa 1960 (at least the tripod mounted one) and I rememberexactly! I saved up for a year and bought one then...it's still in thebasement and still gets used on occasion. The GEM (German Equatorial Mount)leaves a bit to be desired, but it works reasonably well. Does yours havethe tiny finder scope? Removing that and replacing it with somethingfunctional was my first modification.Dave Jessie

The eyepiece is, most likely, the 25 mm Kellner that shipped with it. OKfor a Kellner of the era, I suppose - but a cheap Chinese import Plosslwill have better coatings and a wider field of view. If this is yourfirst scope, you may want to spring for a few good basic eyepieces fromsome place like Hands On Optics or Orion. Clear skies!Dana-- ------------------------+--------------------------------------------------Dana Crom / "Malt has done more than Milton canda...@pacbell.net / To justify God's ways to man" A. E. HousmanSan Jose, California / "Doubtless due to a wider audience" DLC

This is the scope I first split Epsilon Lyrae with, and M42/43, and manyothers. The next Mars opposition I was out sketching every clear night.M57, Albireo, Mizar, . . . I think I'll take it out to my back yard thenext clear night and see what it can do again.The eyepiece is, most likely, the 25 mm Kellner that shipped with it. OKfor a Kellner of the era, I suppose - but a cheap Chinese import Plosslwill have better coatings and a wider field of view. If this is yourfirst scope, you may want to spring for a few good basic eyepieces fromsome place like Hands On Optics or Orion. Clear skies!Dana-- ------------------------+--------------------------------------------------Dana Crom / "Malt has done more than Milton canda...@pacbell.net / To justify God's ways to man" A. E. HousmanSan Jose, California / "Doubtless due to a wider audience" DLC

Thanks for the replies and the great stories! In 1962 I also lived in the Philadelphia area (Norristown) and at age 11 I also had a telescope, a Gilbert 3 inch reflector with a black rolled cardboard tube and plastic lens. I could actually see the rings of Saturn with it. I am looking forward to using the Palomar Jr and maybe renewing the interest I had as a kid.Thanks,George