Sergei Golyshev (AFK during workdays)
M57/NGC 6720, the Ring Nebula: Starfarer's guide to constellation Lyra
This image was made to commemorate the excitment I have experienced when I finally found for the first time this neat tiny nebula, the first deepsky object I have observed. That was also a moment of understanding the fact that visual observations are not my way.
View "Original" size - the Ring Nebula is only 2' across and spans the whole 33 pixels here :)
Aquisition time: 10.11.2012, around 19:20 MSK (GMT+4).
Equipment:
Canon EF 70-200 f/2.8L lens + Canon EF 2x III extender on EOS 60D mounted on Celestron CG-4 GEM (German equatorial mount) with RA drive.
Aperture 71 mm
Focal length 400 mm
Tv = 30 seconds
Av = f/5,6
ISO 640
Exposures: 9(?)
Processing: contrast was set to "linear", 16 bit TIFF were stacked in DeepSkyStacker, contrast and colors adjusted in Photoshop.
M57/NGC 6720, the Ring Nebula: Starfarer's guide to constellation Lyra
This image was made to commemorate the excitment I have experienced when I finally found for the first time this neat tiny nebula, the first deepsky object I have observed. That was also a moment of understanding the fact that visual observations are not my way.
View "Original" size - the Ring Nebula is only 2' across and spans the whole 33 pixels here :)
Aquisition time: 10.11.2012, around 19:20 MSK (GMT+4).
Equipment:
Canon EF 70-200 f/2.8L lens + Canon EF 2x III extender on EOS 60D mounted on Celestron CG-4 GEM (German equatorial mount) with RA drive.
Aperture 71 mm
Focal length 400 mm
Tv = 30 seconds
Av = f/5,6
ISO 640
Exposures: 9(?)
Processing: contrast was set to "linear", 16 bit TIFF were stacked in DeepSkyStacker, contrast and colors adjusted in Photoshop.