Widefield view of Sadr

Submitted by jimwcoleman

Here are some wide-field views of my favorite star, Sadr. Located in the constellation of Cygnus, Sadr is high overhead in the late evening this time of year. Deep in the heart of the Milky Way, Sadr is surrounded to all sides by nebulosity. Significant nebulae like the North American and Pelican Nebula are in the region. Photos were taken with an AstroTech AT72ED refractor, using a Canon 60D at prime focus, 13x2 min subs, ISO 1600.

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Submitted by matt fulghum (not verified) on Fri, 11/17/2017 - 10:43

I've also got an AT72ED and AT2FF, and it feels like I have to crop a significant part of each frame to get rid of residual spherical aberration. Not complaining, mind you, I love the OTA, it's a great optic for the price.


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Submitted by jimwcoleman on Sat, 11/18/2017 - 08:09

I do have to crop some. I purchased the field flattener from Astronomics with this scope but it doesn't completely eliminate the aberration. It's a bit disappointing at times but I try to frame my shots to compensate for that and realize that at the price point, it's a great little scope! :)


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