Search found 1774 matches
- Wed May 08, 2024 6:09 pm
- Forum: Deep Sky Imaging
- Topic: Exposure Starting Point
- Replies: 14
- Views: 496
Re: Exposure Starting Point
Jerry With my refractor, I have found 60x60s to be a decent compromise for objects such as M42, M31, M51, M101, M81/M82, M27 (wide field); 60x15s to be useful for globular clusters. My C8 SCT I use for lunar/planetary. You will soon build up some knowledge after a few trials. If you have a cooled ca...
- Wed May 08, 2024 7:14 am
- Forum: Deep Sky Imaging
- Topic: Exposure Starting Point
- Replies: 14
- Views: 496
Re: Exposure Starting Point
Jerry Having slept on last night's post, the histograms also give other information. Looking at the 120s exposure, the histogram tells me that for M42 with my equipment and sky conditions (Bortle 6) I will not gain anything by increasing the exposure. Increasing the number of frames will help (up to...
- Tue May 07, 2024 7:15 pm
- Forum: Deep Sky Imaging
- Topic: Exposure Starting Point
- Replies: 14
- Views: 496
Re: Exposure Starting Point
Jerry Don't overlook the simplicity of test shots and a correctly shaped histogram - to assess the exposure for an object under given sky conditions. These log histograms displayed in FITS Liberator are test shots of M42. Aim for A to be greater than zero and B to be less than 65535. If A is zero, t...
- Tue May 07, 2024 12:09 pm
- Forum: Gallery
- Topic: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
- Replies: 2
- Views: 219
Re: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
Thanks Brian.
Dave
Dave
- Tue May 07, 2024 11:56 am
- Forum: Gallery
- Topic: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
- Replies: 2
- Views: 219
NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
Many thanks to Leandro for capturing the data and producing the Ha and OIII stacks. The images are a 4-panel Ha/OIII mosaic of NGC 3372 (part of the Carina Nebula). Leandro (@leandro from Argentina) captured the data during March/April 2024, over 16 nights to avoid the moon and bad weather. Leandro ...
- Sat May 04, 2024 1:32 pm
- Forum: Gallery
- Topic: M42 chronicles
- Replies: 50
- Views: 27961
Re: M42 chronicles
Tim
Yes with evolving software and my improved processing, I have been able to achieve better results from older data. Always worth revisiting old stuff.
Dave
Yes with evolving software and my improved processing, I have been able to achieve better results from older data. Always worth revisiting old stuff.
Dave
- Wed May 01, 2024 8:22 am
- Forum: Other Cameras
- Topic: SVBony SV305 (Older Non Pro) not natively detected
- Replies: 12
- Views: 488
Re: SVBony SV305 (Older Non Pro) not natively detected
Phil
Dave
This is worth trying. I have an old ZWO ASI120MC USB2 camera which does not work when connected to a USB3 port but functions correctly when connected via a USB2 port.I could try a USB2 hub to see if that works I guess
Dave
- Wed Apr 17, 2024 10:18 am
- Forum: Solar and Lunar Imaging
- Topic: HDR imaging of eclipse
- Replies: 2
- Views: 2111
Re: HDR imaging of eclipse
Brian
This was the Spaceweather Gallery for the event https://spaceweathergallery2.com/index. ... %20eclipse
It looks like everywhere on the path of the event was affected by high cloud.
Dave
This was the Spaceweather Gallery for the event https://spaceweathergallery2.com/index. ... %20eclipse
It looks like everywhere on the path of the event was affected by high cloud.
Dave
- Sat Apr 13, 2024 4:12 pm
- Forum: Solar and Lunar Imaging
- Topic: Color absent in solar flares- assistance requested
- Replies: 4
- Views: 542
Re: Color absent in solar flares- assistance requested
I used to be able to get color images instantly in Pixinsight just by opening a raw file- no debayering needed (up until today) Post, on the internet, an example light frame 'with no debayering needed', together with the Sharpcap capture file and a brief description of the software used/method to p...
- Wed Apr 10, 2024 4:48 pm
- Forum: Live Stacking
- Topic: field rotation, live stacking
- Replies: 4
- Views: 908
Re: field rotation, live stacking
Are flats being used? If so, there would be an impact?
Dave
Dave