nikonshooter wrote:
Well...since we are neighbors, would you ask you arthritis if we are ever going to have clear skies?
You were one of the first imagers I looked for when I came back a few months ago.
Glad to see you are still collecting photons.
I still dabble with astrophotography but spend most of my imaging time on solar these days.
This is a weather site that I like and it’s more correct more often than most.
https://www.astrospheric.com/apom/?src=mobilebottomIt can provide a decent amount of information if you dig a bit.
Stay safe.
Jim
This is a very nicely captured image.
All of your lines are clean and the surface is loaded with detail.
This should go on a wall.
Well done.
It’s a very nice image.
This is another one that I have had decent results with.
Very well done.
Nicely captured.
This is one that I have had decent results with.
Beautiful job.
Outstanding work.
I haven’t been able to capture this one very well. I have had much better luck with the cigar galaxy.
Nicely done.
Beautiful capture of a difficult subject.
Very nicely done.
Two shots of the same sunspot using two different filters.
Both shot with a Lunt 60mm Pressure tuned solar telescope using a Skyris 236C color CMOS video camera.
Shooting at 40 FPS for 30 seconds yields a just under 1200 frame video.
I stacked the best 50 frames from each set and processed with Photoshop 2022.
The first shot is using a Lunt Herschel wedge for white light.
The second shot is using a Lunt CaK blocking filter for ultra violet.
Stay safe...
Shot with a Lunt 60mm pressure tuned solar telescope.
I used a Skyris 236M CMOS video camera with a 2X barlow.
This is a stack of 50 images from a 1200 image video file in Autostakkert3.
Image was sharpened in Photoshop and is uncropped.
Stay safe...
profbowman wrote:
Thanks for stitching images together and posting the result, Jim. It looks good. --Richard
Thank you very much for the compliment.
The Skyris 236 series does a great job of capturing but the sensor is small. I just have to capture more photons to get a full image.
Thank you very much.
It’s an expensive filter but very well made.
I wasn’t sure if it was something I was going to use a lot but it’s becoming a favorite.
Stay safe
Thank you for your compliment.
H and K are close to the 393.4nm wavelength. The Lunt filter is specific to K line.
H is lower and is sometimes captured with less specific filters like Daystar.
I hope this answers your question.
Here is the stitched image.
Yep those spots are pretty large.
It creates a pretty large file and this has been reduced a bit.
Jim
Here’s a blurb from the Lunt description of the filter spectrum.
“The Calcium K modules line is centered at 393.4 nm. This wavelength is considered to be slightly outside the visible spectrum on the UV side. While most people can visually see the violet color of the wavelength, many cannot resolve the contrast due to yellowing of the cornea. People who have had cataract surgery are often able to see considerable detail. But, it is for these reasons that the Ca-K line is typically studied via the use of cameras, which are able to provide stunning details.“
bwana wrote:
Very nice! The filter does an excellent job on contrast.
bwa
Thank you.
I wasn’t sure if I would like this but it sure pulls the detail.
Jim