Comet 21P/Giacobini-Zinner is a short period comet of the Jupiter family.
This year’s apparition is quite favourable, as it places the comet in the evning sky. Best visibility should be around September 11th, where it should almost become naked eye visible. In binoculars or a telescope it is already a nice view. I observed it with the 127mm refractor, where it visually showed a short tail. Read More →
The Comet 41P/Tuttle-Giacobini-Kresák is passing through the constellation Ursa Major these nights.
66×30″, ISO1600, 300mm f/4, Nikon D750, Skywatcher Star Adventurer, Deep Sky Stacker, Photoshop, Lightroom.
66×30″, ISO1600, 300mm f/4, Nikon D750, Skywatcher Star Adventurer, Deep Sky Stacker, Photoshop, Lightroom. Crop from the image above.
This animation created from the individual frames used for the image above, shows the movement of Comet 41P/Tuttle-Giacobini-Kresák against the starry Background. The time-span of the animation is 36 minutes between 19:09 and 19:45 UT on the evening of March, 25th.
This morning I grabbed the camera and mount and headed right up to the roof before breakfast. My socks were freezing on the hoarfrost, and it was quite cold in my T-Shirt, but then while the camera was happily snapping away at Comet Catalina I was comfortably eating breakfast.
This is a crop from the original image, 27 individual frames were combined using Andreas Roerig’s software Regim, additional processing was done in Adobe Photoshop and Lightroom.
On December 11th I updated the images, as I found out the de-bayering in Regim was configured wrong, also I applied different settings for gradient removal, resulting in a background with less artefacts, I also included 10 more frames for a total of 27 sub-exposures.
In the inverted version the visible tail is 4,4° long.
27x30s, Nikon D750, Nikkor 70-200 f/4, Vixen Polarie, processid in Regim, Photoshop and Lightroom