Taken 12-May-13
Visitors 234


« Previous Next »
14 of 76 photos

H-alpha network in Lyra

And this is the tough target for the night. This photo is roughly centered on RA: 18h34m DE:+31 deg 25' in Lyra. An H-alpha survey suggested some very faint H-alpha structure, and I wanted to see if it would show up using my equipment/technique. While the image did have to be stretched 'to hell and back' to bring out the nebula, I am happy to say that I bagged it.

Of course at 4x4 binning, the resolution of the final image reminds me of an image from the 1980s, and shooting only 2 light frames didn't help much. One would need one hell of an astrograph (7-8" ~f/2.8) to get a brighter image of this field.

Technical details:
Date: May 12, 2013
Time: 0:01 pm - 1:00 am
Camera: SBIG STF-8300M
CCD Temperature: -10 C
Optics: Takahashi Sky 90 II @ 406 mm fl (f/4.5)
Filter: Astrodon 5nm H-alpha
Light frames: 2x30 min
Dark frames: none
Flat frames: ~10
Binning: 4x4
Guiding: Orion SSAG @ Orion finder (~162 mm)
Mount: Losmandy GM-8
Dithering: Manual
Processing: Stacking in DeepSkyStacker, Curves and Levels PSCS6.

Categories & Keywords
Category:
Subcategory:
Subcategory Detail:
Keywords:

H-alpha network in Lyra