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#1
Astrophotography / Abel 85, Phantom of the Opera ...
Last post by Carole - Nov 20, 2024, 15:32:35I have been wanting to get this target and had forgotten I had attempted it back in 2021 but with so little data I had given up on it and completely forgotten I had captured it. So will defnitely be trying to get it again with a lot more data.
However this 2021 rendition was done in Bortle 4 and I shall be trying again in Bortle 8.
16 x 600 Ha (1 hour 40mins)
3 x 5mins Oiii and 3 x 5mins Sii (But had to process this as HSS as virtually nothing in Oiii).
so grand total is 1 hour 55mins.
Sort of trying to make a silk purse out of a Sow's ear.
Samyang lens 135mm @ f2.8 and Atik 460EX
However this 2021 rendition was done in Bortle 4 and I shall be trying again in Bortle 8.
16 x 600 Ha (1 hour 40mins)
3 x 5mins Oiii and 3 x 5mins Sii (But had to process this as HSS as virtually nothing in Oiii).
so grand total is 1 hour 55mins.
Sort of trying to make a silk purse out of a Sow's ear.
Samyang lens 135mm @ f2.8 and Atik 460EX
#2
Updates and Upsets / Re: New WordPress version
Last post by Rick - Nov 19, 2024, 11:47:11I've done a load of updates this morning. Most of them went just fine, but...
...the same problem re-surfaced in the same code, and needed the same fix this morning.
Snark levels in the maintainer's feedback are rising....
Quote from: Rick on Jul 20, 2024, 13:30:39one plugin I had to hack a fix into on the fly to keep the site alive
...the same problem re-surfaced in the same code, and needed the same fix this morning.
Snark levels in the maintainer's feedback are rising....
#3
Astrophotography / Re: M57 Ring Nebula - first go
Last post by Carole - Nov 17, 2024, 18:26:21That's a really good start. Stars are round to the corners.
You have done well. I still don't have plate solving after all these years.
You have done well. I still don't have plate solving after all these years.
#4
Astrophotography / Re: M57 Ring Nebula - first go
Last post by Roberto - Nov 17, 2024, 18:19:41Mark
That's a good result. I think the guiding is fine but your focus is soft. I think you can try sharpening it before stretching.
Roberto
That's a good result. I think the guiding is fine but your focus is soft. I think you can try sharpening it before stretching.
Roberto
#5
Astrophotography / M57 Ring Nebula - first go
Last post by MarkOwens - Nov 17, 2024, 16:16:42Hi,
Finally got round to processing my first proper data I recorded on Monday with my ED80, HEQ5, Canon 600D (unmodded) setup.
60 x 60s subs, with 25 of each Bias, Flat and Dark frames subtracted.
Image is cropped and JPEG to keep size down for the forum.
Full frame TIFF version (200Mb) here:
https://www.dropbox.com/scl/fi/ni0yd440ouy0aazt76ntu/M57-ring-nebula.tif?rlkey=st5fvgw8533qtpc28ds3kj6m3&st=5ibti7ik&dl=0
Comments on how to improve on this would be welcome - I think the guiding could be better (software was saying c.3 arcsecs on average) which is probably why the stars look a bit out of focus.
Processing I've just used GIMP to stretch the histogram and align the colours, otherwise not tried all the more complex star masks, etc. yet.
Mark.
Finally got round to processing my first proper data I recorded on Monday with my ED80, HEQ5, Canon 600D (unmodded) setup.
60 x 60s subs, with 25 of each Bias, Flat and Dark frames subtracted.
Image is cropped and JPEG to keep size down for the forum.
Full frame TIFF version (200Mb) here:
https://www.dropbox.com/scl/fi/ni0yd440ouy0aazt76ntu/M57-ring-nebula.tif?rlkey=st5fvgw8533qtpc28ds3kj6m3&st=5ibti7ik&dl=0
Comments on how to improve on this would be welcome - I think the guiding could be better (software was saying c.3 arcsecs on average) which is probably why the stars look a bit out of focus.
Processing I've just used GIMP to stretch the histogram and align the colours, otherwise not tried all the more complex star masks, etc. yet.
Mark.
#6
Astrophotography / Re: The Bubble Nebula and its ...
Last post by Carole - Oct 31, 2024, 23:38:54That's beautiful
#7
Astrophotography / Re: The Bubble Nebula and its ...
Last post by JohnH - Oct 31, 2024, 16:27:44I have cropped the image to the area of the Bubble - very enlarged so exaggerated star size. I just wanted to prove that the Bubble is actually there.
#8
Astrophotography / Re: The Bubble Nebula and its ...
Last post by JohnH - Oct 31, 2024, 16:10:48Hi Carole,
Thanks. My browser just doesn't seem to want me to upload .png files, maybe it is the size. To me the .png has richer colours.
I adopted Roberto's suggestion from my previous image (Cocoon Nebula).
It was all in Pixinsight. I downloaded a script which allowed me to subtract RGB from the Ha, this gave me a starless Ha image which I added to a starless RGB colour image which I then added to my RGB star (ie no nebulas) background. This means that the star colours are not distorted by Ha data.
Everyone should have an observatory
The design of mine - retracting/slide off roof - seems unusual but it works. If anyone wants a look just get in touch with me and I will be happy to show them.
John
Thanks. My browser just doesn't seem to want me to upload .png files, maybe it is the size. To me the .png has richer colours.
I adopted Roberto's suggestion from my previous image (Cocoon Nebula).
It was all in Pixinsight. I downloaded a script which allowed me to subtract RGB from the Ha, this gave me a starless Ha image which I added to a starless RGB colour image which I then added to my RGB star (ie no nebulas) background. This means that the star colours are not distorted by Ha data.
Everyone should have an observatory
The design of mine - retracting/slide off roof - seems unusual but it works. If anyone wants a look just get in touch with me and I will be happy to show them.John
#9
Astrophotography / Re: The Bubble Nebula and its ...
Last post by Carole - Oct 31, 2024, 14:52:58That is a lot lot better than your first process of this target (and friends).
How did you combine the Ha?
Glad you are happy with having your observatory - at Last!!!!
Carole
How did you combine the Ha?
Glad you are happy with having your observatory - at Last!!!!
Carole
#10
Astrophotography / Re: The Bubble Nebula and its ...
Last post by Carole - Oct 31, 2024, 14:51:02John this is the attachment from Astrobin, not sure why it didn't work for you:
