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.

stargazine_ep25_banner.thumb.jpg.9e57eee22cad68fd6b67a87befeaa79b.jpg

IC 443 The Jellyfish Nebula
 
© D Elijah
Credit D Elijah

IC 443 The Jellyfish Nebula

spaceman_spiff
Sign in to follow this  

IC 443 Jellyfish Nebula Date of image 23/11/2016.

Hardware details: Camera: Canon 600D (astro modded). Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 14 x 3min at ISO 800, Darks: 50 x 3min at ISO 800 (taken during cloud cover), Lights and darks separated by 15 sec intervals. Flats: 50 x 1/350s (taken from laptop monitor screen) at ISO 800, Bias: 50 x 1/4000 at ISO 800. 

The weather was not great - no clouds during the first 40mins of imaging, then they rolled in and never cleared until morning.

Comments:

My first attempt at this nebula. I will need to target i again to reduce the noise. I did have time to capture 50 dark frames at the correct ambient temperature. Some of my previous images have suffered from a directional line-like noise. It has been suggested that this is caused by improperly calibrated darks. So here I set to test this by taking proper darks. After processing, the image is noisy - but this is not directional, meaning the darks worked and I just need more frames. There is also a strong gradient in this image, not sure what from but I tend to get this when imaging targets at low altitudes. Tonight is predicted to be clear...another chance for more data!

Credit

D Elijah

Copyright

© D Elijah
  • Like 1
Sign in to follow this  

From the album:

Photos from Bury

  • 90 images
  • 1 comment
  • 49 image comments

Photo Information for IC 443 The Jellyfish Nebula


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.