Telescope: Meade SN10 at f/4, Orion Atlas EQ-G
Camera: Full Spectrum Modified Nikon D810
Filter: GSO IR Blocking Filter
Guide scope: Williams Optics 50mm, ASI290MM mini, PHD
Exposure: 107x20sec, ISO 200, saved as RAW
Darks: None (dithered every 4 images)
Flats: 32×1/50sec, tee shirt flats taken at dusk
Average Light Pollution: Red zone, poor transparency
Lensed Sky Quality Meter: 18.3 mag/arc-sec^2
Stacking: Mean with a 1-sigma clip.
White Balance: Nebulosity Automatic
Software: Backyard Nikon, Nebulosity, Deep Sky Stacker, Photoshop
NGC 2903 is a fairly bright (Mv 9.0) galaxy located just south of the head of Leo (the Lion). I first spotted this galaxy while star-hopping around Leo and Cancer. It is an easy target in an 8” scope where I was able to clearly see the core and bar. The 12th magnitude spiral galaxy NGC 2916 is to the upper left.
NGC 2903 is currently well placed high in the west as twilight deepens.
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