Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

M92 Drizzle 2x (24/03/2017)
 
© D Elijah
Credit D Elijah

M92 Drizzle 2x (24/03/2017)

Date 24/03/2017. The Globular cluster (M92) was my final target of the night. This image uses the same data as the previous stack of M92, except I only processed the central portion and enabled 2x drizzle. I also tweaked the colour balance to really show the different star colours.

Weather: The sky was clouding up near the end of the night. Seeing was good. Wind was still strong (9-12mph) and I lost quite a few frames because of vibrations. Temperature was about 3-5 degrees.

Optics and camera: Skywatcher Evostar 120 F/D=8.33 (Achromat) with a Baader UHCs filter (for removing light pollution). The camera was a IR-filter removed Canon 600D.

Settings: 64 x 3 minute lights, 50 darks from library, 50 flats taken recently and 50 bias frames. ISO 800.

Mount: Skywatcher AZ-EQ6 with extension pillar.

Processing: The Lights and calibrations frames were processed using Deep Sky Stacker. I set the star detection thresholds to values that caught about 30-40 stars. The final images were stretched in RGB and I then balanced the histograms to retain white balance. Luminance was tweaked to show faint detail. 2X drizzle was enabled. I also used Gimp to add a selective Gaussian blur over a 5 pixel range to blend the RGB noise.

Credit

D Elijah

Copyright

© D Elijah

From the album:

Photos from Bury

  • 90 images
  • 1 comment
  • 49 image comments


Recommended Comments

There are no comments to display.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.