A Canon 5D Mark II was used set at ISO 3200. Exposure times were 28 minutes at F/9. Processed using ImagePlus and PS5. Seeing was about 2.0 arcseconds.
Wednesday, January 12, 2011
Narrow Vision
Ever use a long telephoto lens? I mean a LOOOOOONG telephoto? Like - around 22,000 mm? Well that's about the focal lenght of a 2.3 Meter F/9 telescope. Here are a couple of snapshots taken through the BOK 90" Telescope on Monday night of M1 and Hubble's variable nebula. FOV is about 4 arcminutes.
A Canon 5D Mark II was used set at ISO 3200. Exposure times were 28 minutes at F/9. Processed using ImagePlus and PS5. Seeing was about 2.0 arcseconds.
A Canon 5D Mark II was used set at ISO 3200. Exposure times were 28 minutes at F/9. Processed using ImagePlus and PS5. Seeing was about 2.0 arcseconds.
Subscribe to:
Post Comments (Atom)
2 comments:
WOW, 22,000mm lens, eh? Not many people have one of those in the camera bag! Nice stuff, Dave.
It's a great lens, but a little hard to carry around at sporting events.... ;)
Post a Comment