Community Gallery

Posted by

David Callejas

and

January 20, 2019

← Go back

Scott thomson
Keene, KY, USA

12/04/2021
04:02 am

Equipment Details:

Keene
Orion 90mm working at F/22 with a simple RA drive. Camera is a Canon Rebel T5i working at prime focus.

Post-processing Details:

These images are un-processed originals.

Image Details:

This is a collection of original JPG formatted images taken from 2:03 AM to 6:00 AM local time. I started out taking 1/80 second exposures, every 5 minutes until 3:12 AM when I took images every 150 seconds. Exposure times were increased for each interval to 8 seconds by 3:38. At that time exposures were taken every 75 seconds. @ 3:48 exposure time was increased to 13 seconds until 4:30 AM when exposure time was reduced to 10 seconds. Finally at 4:55 exposures returned to 1/60 of a second every 5 minutes and the scope left to autonomously complete images with the last unguided image shown at 6:00 AM.

Posted

January 20, 2019

in

David Callejas

View Articles

About the Author:

David Callejas, Marketing Director, helps bring EarthSky's content to the world via online ads and other products. He creates strategies that help people around the world find us and appreciate the work we do. He helps manage the EarthSky Store and bring to you the new products that you love. He's the chief liaison between EarthSky.org and the world of commerce. All that, plus he helps post content and populate our pages on Facebook, Google+ and Twitter. Go David!