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.

Knight of Clear Skies

Comet Jacques Moving Past the Garnet Star

Recommended Posts

Just put together an animated GIF of Comet Jacques moving through Cepheus from the subs I took on the 31st August. The nebula on the left is IC1396, home of the Elephant Trunk.


It's appearance is almost circular as its tail was pointing away from the Earth at the time. It shows 48 minutes of movement against the starfield. Each frame is a 2 minute sub taken with my 135mm Super-Takumar lens.

I was pleasantly surprised at how easy it was to create the GIF, I just converted all the subs and loaded them into a new GIMP image as layers. I then deleted the background layer, cropped the image and selected Filter->Animation->Playback. Then I used Filter->Animation->Optimize(For GIF) and exported as GIF with the animation box ticked. As a bonus I think its showing up the periodic error in my mount. I'd expect the image to drift as I discovered the other day that my polar scope is misaligned, but the drift seems to stutter. I really need to try stripping it down.

Here's the result of the final stack, 30 minutes of data:


The comet appears a bit streaky as I was unable to get the comet + stars mode to work in DSS and had to blend two separate stacks, I'd like to fix it if I can. Looking at the image again, I might boost the saturation some more.

Hope you like the animation. From the speed Jacques is moving at you can see how lucky I was to catch it right by the Garnet Star. While I imaged it once previously by the Double Cluster I had no idea it was in Cepheus when I trained my camera on IC1396. :)

Edited by Knight of Clear Skies
  • Like 18

Share this post

Link to post
Share on other sites

Thanks for the comments. I'll try and sort out the colour balance in the animation sometime but I'll probably need to use another program as GIMP only supports 8 bit images. I've reprocessed the final image now, here is the new version:


And a closer crop that shows up the Elephant Trunk more clearly.


Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

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