Image of the day

Captured by
Douglas Rollain

Cygnus area with Seestar s30 Pro

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About Beta Trianguli image

About Beta Trianguli

Contains: Deep sky object
Acquisition Details
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Description

This is an ultra wide field of view (fov) of the area about the star Beta Trianguli. The fov of the image is a whopping 16.3 x 10.4 degrees. While the fov is a plus the downside to taking such a large area with a one shot camera (Nikon 60D @75mm f/l) is that resolution is severely compromised given that each pixel covers 24 arcseconds of sky. Typical seeing at the Owl Mountain Observatory is ~2 arcseconds fwhm or less. If you take Nyquist sampling rates into account I should be imaging at a f/l in which each pixel covers only 0.7 arcseconds in order to take advantage of my seeing conditions. This basically means that I'm reducing my potential practical resolution by a factor of ~34x. The result is lots of tiny stars without a lot of detail. Astrophotography like a lot of things is one big compromise! :-) http://owlmountainobservatory.com https://www.facebook.com/OwlMountainObservatory