Nightscapes & Deep Sky
Brian A. Morganti
M37 is the most spectacular of the three open
clusters in the constellation of Auriga and contains 1890 stars
spread across a region of 20 light-years, at a distance of 4,400
light-years from Earth. The brilliant orange star near the
center is the brightest of about a dozen "red giants" in the
cluster, whose visual orange-red color contrasts with the
surrounding young blue-white stars when viewed thru my 4" refractor.
Date & Location: January 14,
- Bernville, PA
Weather: Calm, 24F.
Sky Conditions: Patchy cirrus with average transparency.
Optics: TeleVue NP101is Refractor
with 0.8x TeleVue Reducer = 432mm @ f4.3
Filter: Astronomic EOS
clip-in CLS-CCD (Light
Mount: Losmandy G-11 equatorial
with Gemini V4
Guiding: Orion Solitaire w/TeleVue
Camera: Canon T1i (500D) Hap
Griffin Modified - Baader UV/IR
Exposure: 25 min (2 x 4 min, 5 x
5min) @ ISO 400 RAW
Calibration Frames: No dark
frame subtraction (24F)
Processing: Photoshop CS4, Noise
Ninja, NIK, Noel Carboni Astronomy Tools
Comments: Background sky was
darkened in processing a bit more than usual in order to make
the star colors more prominent.
Nightscapes & Deep Sky Colors