Search found 31 matches

by Topographic
Wed Oct 07, 2020 7:53 pm
Forum: General Discussion
Topic: Preserving details in difficult Iris
Replies: 21
Views: 2404

Re: Preserving details in difficult Iris

A bit late on this but it seems the 533 has a similar issue to the 294. ZWO are correct do not use bias frames as it seems the bias is not stable on the sensor (if the same issue as 294), use Flats and Dark Flats, and be very careful to match them, plus Dark frames. On the 294 it is suggested using ...
by Topographic
Tue Jul 14, 2020 11:38 am
Forum: Bug Reports
Topic: StarTools 1.6 Final, 1.7 Alpha w/GPU acceleration
Replies: 23
Views: 20798

Re: StarTools 1.6 Final, 1.7 Alpha w/GPU acceleration

I attached the log file with the original post...the artifact was like ringing with another ring in 4 separate pieces outside it. I do struggle a little with decon. I will try again! I can't quite see that artifact in the image you attached, however it sounds like an overexposing star may not have ...
by Topographic
Mon Jul 13, 2020 7:25 pm
Forum: Bug Reports
Topic: StarTools 1.6 Final, 1.7 Alpha w/GPU acceleration
Replies: 23
Views: 20798

Re: StarTools 1.6 Final, 1.7 Alpha w/GPU acceleration

Hi Ivo Just trying out 1.7 Tried deconvolution and got some odd ring effects with some stars. See attachments, tried again and got an odd smaller ring artifact (which I have had with 1.6). Is moffat the default PSF? Error diffusion = when you pree help you get Regularization that mentions a default ...
by Topographic
Sun Jul 12, 2020 11:23 am
Forum: Gallery
Topic: Cygnus Loop RASA and Optolong L-eNhance
Replies: 1
Views: 345

Cygnus Loop RASA and Optolong L-eNhance

Cygnus Loop with RASA 8, Zwo ASI071MC Pro, Optolong L-eNhance, 158 X 40" exposures, gain 95, -5C. Darks/Bias. No flats, No guiding. Moon 80% in Bortle 3. I stacked using Siril-ic after disappointing results with DSS ( the colour seemed to disappear) Any criticism on processing welcome, I am slowly g...
by Topographic
Sat Jul 11, 2020 11:55 am
Forum: Image Processing Troubleshooting
Topic: Stitching mosaic taken with OSC/tri band filter
Replies: 3
Views: 558

Re: Stitching mosaic taken with OSC/tri band filter

Hi David, Apologies for the slight delay (released 1.6, 1.7 alpha, today). You will either want to create the mosaic beforehand as one big linear dataset (or 3 big linear dataset channels), OR create the mosaic out of the individually, (roughly identically) composited/processed images afterwards. F...
by Topographic
Tue Jul 07, 2020 12:27 pm
Forum: Image Processing Troubleshooting
Topic: Stitching mosaic taken with OSC/tri band filter
Replies: 3
Views: 558

Stitching mosaic taken with OSC/tri band filter

Hi I am in the middle of imaging the Cygnus Loop, RASA 8, ASI071MC, Optolong L-enHance filter during full moon. I am in a Bortle 3 area but I enjoy experimenting and am hoping the Optolong filter will enable me to lose less imaging nights due to the moon. I understand (slight exaggeration) loading t...
by Topographic
Tue Jul 07, 2020 11:58 am
Forum: Gallery
Topic: Messier 4 Rasa 8" ZWO ASI071 MC Pro
Replies: 7
Views: 1412

Re: Messier 4 Rasa 8" ZWO ASI071 MC Pro

Burly wrote:Do you have the original fits file not the tiff
Burly

I just noticed this....or I don't remember responding :lol:

the autosave fit is in dropbox

David
by Topographic
Tue Jun 02, 2020 8:29 am
Forum: Gallery
Topic: Messier 4 Rasa 8" ZWO ASI071 MC Pro
Replies: 7
Views: 1412

Re: Messier 4 Rasa 8" ZWO ASI071 MC Pro

Burly

Thanks, I lean that way too. If you have a play if you post it I would be grateful if you could include a copy of thelog. It all helps with the learning process

Cheers

David
by Topographic
Mon Jun 01, 2020 4:13 pm
Forum: Gallery
Topic: Messier 4 Rasa 8" ZWO ASI071 MC Pro
Replies: 7
Views: 1412

Re: Messier 4 Rasa 8" ZWO ASI071 MC Pro

Tried again.

This time I used the 'Sample' method for colour.

Which do people think is better or prefer?

David
M4 Sample.jpg
M4 Sample.jpg (414 KiB) Viewed 1397 times
by Topographic
Sun May 31, 2020 1:35 pm
Forum: Gallery
Topic: Messier 4 Rasa 8" ZWO ASI071 MC Pro
Replies: 7
Views: 1412

Messier 4 Rasa 8" ZWO ASI071 MC Pro

This is my first effort with my RASA and the ASI 071. Lights 100x$0s Darks 100 Flats/DFlats 20 Bortle 3 (rural France) Gain 95 Temp -5 APT Ivo, I would be grateful if you could assess the data and processing (feel free to have a go yourself :) ) Anyone else want to play, feel free. https://www.dropb...