Search found 515 matches

by timh
Sun Feb 25, 2024 10:13 pm
Forum: Gallery
Topic: NGC 7129 in NIRGB, NIR and RGB
Replies: 6
Views: 5250

Re: NGC 7129 in NIRGB, NIR and RGB

Hi Menno. A very late additional comment. Just thinking about the significance of the lack of (~ 800-900 nm ?) NIR from these HH objects and reflecting that it probably particularly makes sense for an HH object ? Well at least if I understand the attached publication correctly - which I may not of c...
by timh
Sun Feb 25, 2024 9:23 pm
Forum: Gallery
Topic: Plato (processed with waveSharp)
Replies: 2
Views: 275

Re: Plato (processed with waveSharp)

Again very nice Dave --sharp but also remaining realistic looking and not overcooked- The methods you provide serves as a great guide to what to do. I have saved a file with links to your posts as a reminder of settings and to get the waveSharp software I am away from imaging again for about a month...
by timh
Tue Feb 20, 2024 10:19 am
Forum: Gallery
Topic: Aristoteles & Eudoxus 2-panel mosaic
Replies: 4
Views: 1399

Re: Aristoteles & Eudoxus 2-panel mosaic

Thanks Dave, very useful account of exactly what to do and I will give it a serious go with the 12 inch Newt one of these nights. I was interested in thinking through the whole question of what aperture, focal length etc should really work best for lunar/ planetary imaging and came across this threa...
by timh
Fri Feb 16, 2024 10:56 pm
Forum: Gallery
Topic: Aristoteles & Eudoxus 2-panel mosaic
Replies: 4
Views: 1399

Re: Aristoteles & Eudoxus 2-panel mosaic

Superb Dave. Just catching up with stuff I missed. Wavesharp looks interesting
by timh
Thu Feb 15, 2024 7:34 pm
Forum: Live Stacking
Topic: Issues with short exposures and flats
Replies: 19
Views: 945

Re: Issues with short exposures and flats

I had a similar effect some time ago that turned out to be due to the offset (brightness) value at which the darks were taken not being exactly the same as for the lights -- so another possibility perhaps?


Scrub that ..just noticed brightness was the same :-)
by timh
Thu Feb 15, 2024 1:45 pm
Forum: Live Stacking
Topic: SC gets slower and slower when live stacking
Replies: 10
Views: 419

Re: SC gets slower and slower when live stacking

Hi Chris, Robin Just checked and on 12/02 for example it was 312 frames captured in total but that was split between 3 objects. Quite a few frames --maybe as many as 200 were rejected over this time --either brightness or FWHM filters. I always like to do EEA while capturing so I was using the live ...
by timh
Thu Feb 15, 2024 1:20 pm
Forum: Gallery
Topic: Local galaxies. big telescope versus small telescope
Replies: 4
Views: 324

Re: Local galaxies. big telescope versus small telescope

Yes thanks Dave. As shown in that APOD picture the hidden galaxy is really a very attractive object -- lots of red that doesn't even need an HA filter to bring it out and a foreground of gold, blue and white stars. I look forward to seeing if I can drag the big scope out to somewhere dark and - if t...
by timh
Thu Feb 15, 2024 11:06 am
Forum: Live Stacking
Topic: SC gets slower and slower when live stacking
Replies: 10
Views: 419

Re: SC gets slower and slower when live stacking

Just to comment that it can't be a general problem because I am also using win10 and the latest SC4.1 and routinely capture via live stacking for several hours of an evening but am not seeing any slow down?
by timh
Wed Feb 14, 2024 10:10 pm
Forum: Gallery
Topic: Local galaxies. big telescope versus small telescope
Replies: 4
Views: 324

Re: Local galaxies. big telescope versus small telescope

Thanks Brian . Now yes the VX24 :-) just a tad heavier than the VX12 which is already at my limit for lifting. I'm terrified of dropping it every time I hoik it onto the mount. Joking aside though it does raise the question of at what point does the benefit of increasing the aperture and decreasing ...
by timh
Wed Feb 14, 2024 5:51 pm
Forum: Gallery
Topic: Local galaxies. big telescope versus small telescope
Replies: 4
Views: 324

Local galaxies. big telescope versus small telescope

A brief gap in the clouds - but not so transparent skies - permitted me to try the VX12 (12 inchF4 Newt) and compare it's performance to that of the 4.2 inch F 5.6 refractor versuis the same galaxy target, IC342 (last week's post) -- and to see how its performance fits theory. Also being big and hea...