You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Astrophotography and Sketching >> Solar System Imaging & Processing Previous   Index   Next   Threaded   Pages: 1 rumples riot Carpal Tunnel Reged: 07/01/04 Posts: 2291 Loc: South Australia Jupiter 6 May 2006 1406UT       #943672 - 05/06/06 04:58 AM Attachment (34 downloads) Edit   Reply   Quote Quick Reply   Reasonable conditions last night considering the constant cloud. Managed to snap off this image just before midnight local time. Seeing was somewhere around 7/10. The EP image looked very good but the seeing was too variable to provide very good results. Still this is good given the 10 day hiatus from imaging. Some good detail in the STB and NTB, a nice oval in NTB (yellow oval) and of coarse white spots in all zones. comments welcome. -------------------- EARTH AND COSMOS My Solar System Imaging BLOG How to peltier cool a C14 SCT SOUTH CELESTIAL POLE Post Extras:       davidpretorius professor emeritus Reged: 09/25/05 Posts: 575 Loc: Tasmania, Australia Re: Jupiter 6 May 2006 1406UT [Re: rumples riot]       #943749 - 05/06/06 07:39 AM Edit   Reply   Quote Quick Reply   nice work, i noticed some onion rings which made me think, how do you work out the exposure when imaging in b/w each channel thru the filter? I believe onion rings have a few sources ie average seeing and underexposure -------------------- Davo 10" peltier cooled Next with dob driver II, Lu075 camera Post Extras:       Jeffrey Sugden sage Reged: 05/04/05 Posts: 258 Loc: Akron, OH Re: Jupiter 6 May 2006 1406UT [Re: davidpretorius]       #943778 - 05/06/06 08:23 AM Edit   Reply   Quote Quick Reply   Onion rings? -------------------- Jeff WO ZS 80FD (on the way) Celestron FS80 Celestron FS80WA Meade SN6 Cave Newt 6" F8 (project) SAC 8-II Meade LPI Philips SPC-890 Orion SSAG Nikon D40 EQ-6 (SynScan upgrade) Post Extras:       rumples riot Carpal Tunnel Reged: 07/01/04 Posts: 2291 Loc: South Australia Re: Jupiter 6 May 2006 1406UT [Re: davidpretorius]       #943785 - 05/06/06 08:35 AM Edit   Reply   Quote Quick Reply   Dave, you may be confused here. This image was taken with the toucam. I sort of explained this on SCP under the local weather forum. That said, I was imaging with the meter set to 203. Any higher than that and I get burn out in the centre. I think onion rings actually have more to do with compression and codec than the exposure. At least that is how I understand what Anthony told me at Snake Valley. As I understand it onion rings are where the colour shades meet when there is too much compression. The limitation of the Toucam is the inability to produce 10 fps without some compression. It is only really capable to 5fps without compression. So in bad seeing not enough good frozen moments if you are running at 5fps. So in those conditions 10 fps is necessary as you know. And; of course compression results. Wish I could have images with the DMK, there was just not enough time to get it set up. Paul -------------------- EARTH AND COSMOS My Solar System Imaging BLOG How to peltier cool a C14 SCT SOUTH CELESTIAL POLE Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 8 registered and 13 anonymous users are browsing this forum. 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