![Glenn Chaple](/stuff/contentmgr/files/1/dfd761c2b455bdfdb9179e84afb41200/header/glenn_chaple_edmund_reflector.jpg)
Glenn Chaple
I’ve been an avid amateur astronomer since the summer of 1963 when a high school friend showed me Saturn through his telescope. I received a BS degree in astronomy from the UMass Amherst in 1969, and then worked for two years at the Alice G. Wallace Planetarium in Fitchburg, Massachusetts, while receiving a Master’s Degree in Science Education from Fitchburg State College. From 1974 until my retirement in 2006, I was a middle school science teacher – first in the Fitchburg school system, then at Groton-Dunstable.
I co-authored, with Terence Dickinson and Vic Costanzo, the Edmund Mag 6 Star Atlas, and wrote the books Exploring With a Telescope (Franklin Watts – 1988) and The Outer Planets (Greenwood Press - 2009). I contributed chapters on double stars to David Eicher’s Deep-sky Observing With Small Telescopes (Enslow Publishers – 1989) and James Muirden’s Sky Watchers Handbook (W.H. Freeman – 1993). Between 1977 and 1987, I wrote a column on double stars for Deep Sky Magazine. From 1982 until 1994, I handled the “What’s Up?” column for the children’s astronomy magazine Odyssey. Since 2002, I’ve authored the monthly “Observing Basics” column for Astronomy.
I’ve been a member of the Amateur Telescope Makers of Boston since 1980, serving as President from 2015-2018., The same year, I joined the American Association of Variable Star Observers (AAVSO), and have forwarded more than 79,000 variable star estimates to that organization. In 2006, I joined the Astronomical League.
![M97: The Owl Nebula](/stuff/contentmgr/files/2/bb58b849d7400e6906a6494a32dd4bb1/header/owlnebula.jpg)
M97: The Owl Nebula
Ghost of Jupiter: NGC 3242
![M46 & NGC 2438](/stuff/contentmgr/files/2/0d3f32dba71269c546f63c7778123dfd/header/ngc2438motta.jpg)
M46 & NGC 2438
Kemble's Cascade & NGC 1502
![Kaffaljidhma: Double Star in Cetus](/stuff/contentmgr/files/2/6c891ed8fa5d58e12d64a10afdc7b335/header/gamma_ceti.jpg)
![NGC 891: Edge-on Galaxy in Andromeda](/stuff/contentmgr/files/2/c9ed8a984f719bc62d5d656e53440577/header/ngc_0891.jpg)
![M80: Globular Cluster in Scorpius](/stuff/contentmgr/files/2/0e0a854e79bdbedb60b16c1018f5a5cb/header/m80.jpg)
![M104: The Sombrero Galaxy](/stuff/contentmgr/files/2/71e3a1fa8e531874d38a309ea04b6b62/header/m104_stargate.jpg)
M104: The Sombrero Galaxy
![M101: Spiral Galaxy in Ursa Major](/stuff/contentmgr/files/2/c4e379b2b79cfee97a3fc76c2ee50323/header/m101.jpg)
M101: Spiral Galaxy in Ursa Major
![M78: Reflection Nebula in Orion](/stuff/contentmgr/files/2/ca33dc27a51084a9723a00d43ecd84fd/header/m78.jpg)
M78: Reflection Nebula in Orion
NGC 7662: the Blue Snowball
![Maserthim (γ Arietis)](/stuff/contentmgr/files/2/68dd8a21d37923ee33ac7db37d7dd08f/header/maserthim_map.png)
Maserthim (γ Arietis)
Struve 2816 and 2819: Triple and Double Stars in Cepheus
NGC 6934: Globular Cluster in Delphinus
![Coathanger Asterism in Vulpecula](/stuff/contentmgr/files/2/c9b69f0687e65ddc5929480c288153da/header/coathanger.jpg)
Coathanger Asterism in Vulpecula
![M22: Globular Cluster in Sagittarius](/stuff/contentmgr/files/2/4ae195e6d6807887ac8fb39049713172/header/m22.jpg)
M22: Globular Cluster in Sagittarius
![The Lunar X](/stuff/contentmgr/files/1/da0a50be0d752d2e41634143a763368c/header/lunar_x.jpg)
The Lunar X
![M5: Globular Cluster in Serpens](/stuff/contentmgr/files/1/79ab5f82359da64cf1f2e6d6ae9d9182/header/hubble_m5.jpg)
M5: Globular Cluster in Serpens
![Porrima: Binary Star in Virgo](/stuff/contentmgr/files/1/9f9d74fc1bbd520a1f05437af03036c2/header/virgo_possima_map.png)
Porrima: Binary Star in Virgo
![Algieba: Double Star in Leo](/stuff/contentmgr/files/1/d57f9861ff77acf09af86cc27ea51c01/header/albieba_chart.jpg)
Algieba: Double Star in Leo
![Variable Star R Leonis](/stuff/contentmgr/files/1/1e118532c7bb3a9706e361dc016f7614/header/r_leo_chart.jpg)
Variable Star R Leonis
433 Eros
M74: Galaxy in Pisces
M33: Galaxy in Triangulum
Almach
β Cygni (Albireo)
M56: Globular Cluster in Lyra
M92: Globular Cluster in Hercules
![β Scorpii](/stuff/contentmgr/files/1/a5ed249bce42de0eb8f7297c6d0cdaeb/header/beta_sco.jpg)
β Scorpii
3C 273: Quasar in Virgo
NGC 2903: Spiral Galaxy in Leo
Castor: alpha (α) Geminorum
β Monocerotis
![NGC 457 (the “ET Cluster”)](/stuff/contentmgr/files/1/bd0115b06bca4d849637bb04365eb919/header/ngc457.jpg)
NGC 457 (the “ET Cluster”)
![Delta (δ) and Mu (μ) Cephei](/stuff/contentmgr/files/1/bcbd8d08c3932ab68fe05c4e83356403/header/s_cepheus.png)
Delta (δ) and Mu (μ) Cephei
The Milky Way
IC 4665
NGC 6207
Izar (ε Boötis)
M40: The “Unknown” Messier Object
Sirius
h 3945 Canis Majoris
Beta Orionis (Rigel)
Omicron Ceti (Mira, the “Wonderful”)
Beta Persei (Algol, the "Demon Star")
![NGC 7293: the Helix Nebula](/stuff/contentmgr/files/1/5dd75b3fa8a70b724d0430c26754d080/header/helix.jpg)
NGC 7293: the Helix Nebula
Epsilon Pegasi: The Pendulum Star
Chaple’s Arc
Messier 6 and Messier 7
44 Boötis
![Mizar, The First Double Star](/stuff/contentmgr/files/1/c33a217ab2cf3f1c9fcec1d325a58787/header/mizar.jpg)
Mizar, The First Double Star
NGC 2362: Open Cluster in Canis Major
Struve 817 Orionis
A Selection of Double Stars in Andromeda
A Selection of Double Stars in Draco
A Selection of Double Stars in Cancer
A Selection of Double Stars in Gemini
A Selection of Double Stars in Cygnus
A Selection of Double Stars in Scorpius
A Selection of Double Stars in Corona Borealis
A Selection of Double Stars in Orion
![A Selection of Double Stars in Boötes](/stuff/contentmgr/files/0/ee2fc322bdb653e46840c9caccd1bb2b/header/corona_and_bootes.jpg)