Search found 3 matches

by efahl
Mon Jun 11, 2018 2:18 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Moon Setting Behind Teide Volcano (2018 Jun 04)
Replies: 16
Views: 18625

Re: Focal length question

Or, this could be a heavy crop from the full image although this seems unlikely given the image on the tilt-screen. Looking at the framing of the video and the view finder on the camera, I think that the video is indeed is cropped down considerably. The view finder is showing about a 5x-wider chunk...
by efahl
Mon Jun 04, 2018 3:28 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Moon Setting Behind Teide Volcano (2018 Jun 04)
Replies: 16
Views: 18625

Re: APOD: Moon Setting Behind Teide Volcano (2018 Jun 04)

Awsome video, can anyone tell me how long that lens is? I see 1.4 + 2.0 extenders, probably on a 1000 mm, so effectively 2800 mm???
by efahl
Mon Nov 02, 2015 7:27 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet ISON Being Destroyed by the Sun (2015 Nov 02)
Replies: 19
Views: 3149

Re: APOD: Comet ISON Being Destroyed by the Sun (2015 Nov 02)

Edd wrote:Is that Saturn crossing from left to right across the bottom?
I wondered the same thing, since there don't appear to be diffraction spikes on anything else visible.