NGC 7662 – The Blue Snowball in Andromeda

Telescope: Meade LX50 Mak 7 at f/15, Orion Atlas EQ-G
Camera: ZWO ASI071MC, Orion Imaging Skyglow Filter
Sensor Temperature: -10C, Gain: 300, Offset: 50
Guide scope: Astro-Tech 60mm, Meade DSI Pro II, PHD
Exposure: (18+21)x120sec saved as FITS
Darks: 32x120sec saved as FITS
Flats: 32x30sec, LED tracing tablet
Average Light Pollution: Red zone, poor to fair transparency
Lensed Sky Quality Meter: 17.2-18.6 mag/arc-sec^2
Stacking: Mean with a 2-sigma clip.
White Balance: Nebulosity Automatic
Software: Nebulosity, Deep Sky Stacker, Photoshop

NGC 7662 is a remarkable little planetary nebula in Andromeda. Visually, it appears as a beautiful blue spot, easily visible even in my little ETX-60 as an out of focus star. Photographically, it shows a sharply defined shell with a ring circling the central star. The shell also shows hints of fine detail. The central star is rather unusual for a planetary in that it is a variable star that ranges from Mv 12 to 16.

The source data for this image was captured on the evenings of 11/3 and 11/8/2017. I am still waiting for an evening with at least good seeing to see what this scope can really do.


NGC7662 (11-3&8-2017)-1j.jpg