Search found 16 matches

by VPR
Sat Feb 20, 2021 1:46 am
Forum: Polar Alignment
Topic: Should the mount be tracking during polar align
Replies: 4
Views: 234

Re: Should the mount be tracking during polar align

If you want to stop the Losmandy Mount tracking (Gemini-2), there are two ways to do this: 1) Menu > Park > ‘Park at CWD Position’. 2) Menu > Track > ‘Terrestrial’. Option 1) is not recommended because accidentally pressing one of the 4 direction buttons will start the Mount tracking again – cause f...
by VPR
Sat Jan 09, 2021 10:44 pm
Forum: Gallery
Topic: The Bubble Nebula, up close and personal
Replies: 5
Views: 952

Re: The Bubble Nebula, up close and personal

Very nice image (guided or Unguided). I like the color too.

V.P
by VPR
Sat Jan 09, 2021 9:28 pm
Forum: Gallery
Topic: M31_finally properly processed?
Replies: 7
Views: 235

Re: M31_finally properly processed?

Tim,
This is an excellent link on color processing. Thank You.
V.P
by VPR
Thu Dec 17, 2020 7:16 pm
Forum: Gallery
Topic: M33 Triangulum - 100% PixInsight processing.
Replies: 3
Views: 359

Re: M33 Triangulum - 100% PixInsight processing.

Hi Menno, Good observation. I think I know where the problem is – wrong offset was in use during data collection. When I collected the data the offset was 5 (SharpCap calls it ‘Brightness’ for ZWO cameras! :? ). Subsequent tests have shown this needs to be much higher for the gain and temp used. I h...
by VPR
Sat Dec 12, 2020 7:24 pm
Forum: Gallery
Topic: M33 Triangulum - 100% PixInsight processing.
Replies: 3
Views: 359

M33 Triangulum - 100% PixInsight processing.

Hi to all and hope everyone is staying safe, In the past, I was never satisfied with color processing done in PixInsight :cry:. To troubleshoot, decided to change the steps in PI to see if that made a difference. This image is processed entirely in PI (with different steps). No other software was us...
by VPR
Sat Nov 28, 2020 3:05 pm
Forum: Gallery
Topic: M1 The Crab Nebula (180 sec f/7 unguided)
Replies: 6
Views: 499

Re: M1 The Crab Nebula (180 sec f/7 unguided)

Hi Menno,

Very nice image for unguided subs. I also like the way you have gone about getting to this point – with the adjustment process detailed. It is ‘food for thought’ :idea: . Thanks for sharing and keep up the good work.

Best regards,
V.P
by VPR
Sat Sep 26, 2020 7:19 pm
Forum: How do I?
Topic: White Balance Settings for Nebula
Replies: 7
Views: 1380

Re: White Balance Settings for Nebula

I think the confusion comes from the labels on the right Image Control tab. It would be better if they said something like ‘ch amp gain’. This would indicate that they controlled the camera directly. I had the same miss conception till I experimented with the Image Control tab sliders and found that...
by VPR
Sun Aug 23, 2020 2:55 am
Forum: Deep Sky Imaging
Topic: neutral settings for capturing
Replies: 3
Views: 566

Re: neutral settings for capturing

I am running a ZWO 1600MC Pro camera. Here is what my experimentation has shown. SharpCap’s Image Control Tab – White Balance (R) and (B) settings, control the Camera’s individual ch gains. Changing this affects the ‘RAW’ data output by the camera. So, when the RAW data reaches SharpCap, it has alre...
by VPR
Sun Jun 28, 2020 9:31 pm
Forum: Gallery
Topic: M63 - Sunflower galaxy
Replies: 2
Views: 475

Re: M63 - Sunflower galaxy

Brian ……. PHD2 total RMS was 0.49 to 0.77arcsec for the duration. Second factor is short exposure. The third factor is that I deployed differential stretch (small stars as opposed to using Star Reduction script). So, I think all three attributed to this. …… V.P
by VPR
Sun Jun 28, 2020 8:21 pm
Forum: Gallery
Topic: M63 - Sunflower galaxy
Replies: 2
Views: 475

M63 - Sunflower galaxy

M63 – Sunflower galaxy. This is my fist serious attempt at AP. I have tried different things here with the goal of working out some of the bugs in many areas. Wanted to share this image given our discussion of Internal vs External calibration. This is all Internal SC calibration. Eq used: TEC140, G1...