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Dave
Search found 1781 matches
- Sun May 26, 2024 9:42 am
- Forum: Bug Reports
- Topic: Updating to latest version
- Replies: 6
- Views: 63
- Thu May 23, 2024 9:59 pm
- Forum: How do I?
- Topic: Image quality while plate solving with a C14 & Starizona focal reducer
- Replies: 6
- Views: 207
Re: Image quality while plate solving with a C14 & Starizona focal reducer
Gene
You could try solving with a focal length of 2620 (3910 x 0.67).
Dave
You could try solving with a focal length of 2620 (3910 x 0.67).
Dave
- Thu May 23, 2024 3:21 pm
- Forum: How do I?
- Topic: Image quality while plate solving with a C14 & Starizona focal reducer
- Replies: 6
- Views: 207
Re: Image quality while plate solving with a C14 & Starizona focal reducer
Gene
What model of C14 is it?
Dave
What model of C14 is it?
Dave
- Tue May 14, 2024 5:59 pm
- Forum: Gallery
- Topic: High res "EEA" with SC autostacks + Blur Xt
- Replies: 5
- Views: 325
Re: High res "EEA" with SC autostacks + Blur Xt
Tim
Very good , looking forward to the colour arriving.
Dave
Very good , looking forward to the colour arriving.
Dave
- Sun May 12, 2024 5:59 pm
- Forum: Gallery
- Topic: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
- Replies: 7
- Views: 508
Re: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
Thanks Menno. This is scaled down to 33% of original size and saved as a JPG with quality 78% to get under the forum 1Mb limit. HOO2_combine-crop-lpc-cbg-St-scaled .jpg The 4-panel mosaic is 9341x5770. The FITS out of Astro Pixel Processor is 616Mb. Saved as a PNG is 88Mb. Saved as a JPG with 90% qu...
- Sun May 12, 2024 3:14 pm
- Forum: Gallery
- Topic: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
- Replies: 7
- Views: 508
Re: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
Thanks Tim.
Dave & Leandro
Dave & Leandro
- Sat May 11, 2024 5:23 pm
- Forum: Gallery
- Topic: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
- Replies: 7
- Views: 508
Re: NGC 3372, Ha/OIII 4-panel mosaic, Argentina/UK collaboration
Results of some experimentation to obtain stronger colours. Using GIMP's Hue-Saturation with Saturation = 20 and applied twice: NGC3372_HOO-2-saturated2.JPG GIMP-Saturation.JPG Using PixInsight Processes StarMask and CurvesTransformation: NGC3372_HOO-2-starmask.jpg The original image: NGC3372_HOO-2....
- Wed May 08, 2024 6:09 pm
- Forum: Deep Sky Imaging
- Topic: Exposure Starting Point
- Replies: 14
- Views: 882
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: 882
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: 882
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...