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Post by Dragon Man on Sept 25, 2017 9:57:02 GMT
Please post your images here for October - Single Galaxy Month It can be any Single Galaxy but must be captured this month: October 2017. 'Single Galaxy' means any Galaxy that is separate from other Galaxies. Other galaxies may be in the frame, but the image is not for Galaxy Clusters or Colliding Galaxies. If the Galaxy you are nominating is smaller than other Galaxies in the frame please let us know which Galaxy you are referring to. See Rules - HEREDon't forget to include: (you can copy paste this list)
Camera - Telescope - Mount - Focal Reducer/Barlow - Filters - Exposure length - Stacks - Software - Settings (Gain 60%, high saturation, etc) - Any Processing (on-the-fly, post-processing) - Conditions (80% Moon, windy, bad light pollution, etc) - General Location (Town or area & State & Country) -
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Post by Dragon Man on Sept 29, 2017 15:29:49 GMT
NOW OPEN
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elpajare
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Post by elpajare on Oct 21, 2017 6:52:14 GMT
NGC 309 is a 12,17th magnitude Spiral Galaxy appearing in the constellation Cetus. It is 264 million light years from our solar system. SKYWATCHER 200/800 + Risingtech IMX224+ Risingky software 10x15" stack-mean. Gain max. Levels, Contrast, selective Gaussian Blur with GIMP Moon=0
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elpajare
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Post by elpajare on Oct 21, 2017 10:27:22 GMT
NGC 2403 in Camelopardalis: This beautiful spiral galaxy is an outlying member of the M 81 group of galaxies, and thus about 10 million light years distant. As of late 2004, two supernovae have been reported in NGC 2403: SN 1954J and SN 2004dj. SKYWATCHER 200/800 + Risingtech IMX224+ Risingky software 10x15" stack-mean. Gain max. Levels, Contrast, selective Gaussian Blur with GIMP
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Deleted
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Post by Deleted on Oct 22, 2017 7:25:10 GMT
NGC 309 is a 12,17th magnitude Spiral Galaxy appearing in the constellation Cetus. It is 264 million light years from our solar system. SKYWATCHER 200/800 + Risingtech IMX224+ Risingky software 10x15" stack-mean. Gain max. Levels, Contrast, selective Gaussian Blur with GIMP Moon=0 Nice work. Are you sure about the 264M ly?
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Post by Dragon Man on Oct 22, 2017 10:08:45 GMT
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elpajare
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home town/country: Girona-Spain
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Post by elpajare on Oct 22, 2017 15:30:02 GMT
This are data from Skysafari. I putted here because is one of the most far galaxies I ever shot.
IMX224 and the 200/800 are doing a good tandem with this faint objects. Thanks for your comments.
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Post by Deleted on Oct 22, 2017 21:56:13 GMT
Must be a big one....
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Post by Deleted on Oct 22, 2017 22:06:39 GMT
Dodged the clouds and hunted down a few galaxies last night. 1. NGC 7793 in Sculptor. Mag 10, 12.7 million ly 2. NGC 613 in Sculptor. Mag 10, 67.5 million ly 3. Also looked at Elpajare’s NGC 309. I used a similar scope so this gives a bit of idea of how the 178 compares to the 224. Exposure parameters were the same for each capture. Camera – GStar Ex3 IMX178 2x2 14bit RGB Telescope – 200/1000 Newt Mount – HEQ5 Focal Reducer/Barlow – x0.8 Filters - none Exposure length – 20s Stacks - 6 Software – Camera control – ToupSky, Stacking (only) - Astrotoaster Settings - Gain 20%, Gamma 0.55, Histo 0.5, Contrast up a bit Any Processing – Auto dark subtraction, No post processing Conditions - No moon, 7/10, intermittent cloud. General Location – Esk QLD
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elpajare
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Post by elpajare on Oct 23, 2017 7:03:40 GMT
The imx178 gives punctual stars and a dark background very good but it lacks enough sensitivity. According to the tables of Risingtech that sells cameras with these chips, the imx224 is almost 5 times more sensitive than the imx178.
Why not try putting the gain to the maximum? I think you could win some more detail
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Post by Deleted on Oct 24, 2017 6:22:04 GMT
Putting gain to the max would wash out my images if I use my normal histogram and gamma settings.
Do you stretch the histogram and the midtones with gamma?
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elpajare
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Post by elpajare on Oct 24, 2017 7:38:13 GMT
I leave all settings by default. The image is quite ugly but with GIMP you can balance everything better.
The only thing I change is the shutter speed. The Gain always leaves the maximum for objects of deep sky like galaxies, cumulus or nebulae.
Only if I photograph very bright objects like a mag2 star I reduce Gain a little bit.
Im using Risingtech software (Risingsky)
I read somewhere that it was best to capture all the light of the object, adjusting the exposure and leave for a later processing with a suitable program the necessary adjustments. Controls of camera programs are very rudimentary
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elpajare
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Post by elpajare on Oct 24, 2017 14:47:57 GMT
NGC 1023 is a galaxy in Perseus with an apparent magnitude of 9.5 and an apparent diameter of about 8.7 arc minutes. It is visible in an 8" scope, but to see it well you'll need a much larger scope.SKYWATCHER 200/800 + Risingtech IMX224+ Risingky software 10x15" stack-mean. Gain max. All settings by default, included Histogram. Levels, Contrast, selective Gaussian Blur with GIMP
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robrj
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Post by robrj on Oct 24, 2017 17:55:40 GMT
ARP 78 Camera - ZWO ASI224MC Telescope - Orion ED80T-CF Mount - AVX Focal Reducer/Barlow - none Filters - none Exposure length - 16s Stacks - 19 Software - Sharpcap 3.1 Settings (Gain 60%, high saturation, etc) - Gain 350, White Bal (B)=90, White Bal (R) = 54 Any Processing (on-the-fly, post-processing) - Brightened and contrast w/photoshop to mimic view at the screen Conditions (80% Moon, windy, bad light pollution, etc) - Slight wind, no moon visible. Red/Orange zone General Location (Town or area & State & Country) - Escondido, CA
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robrj
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Post by robrj on Oct 24, 2017 18:26:44 GMT
M31 Camera - Ultrastar-C Telescope - ED80T-CF Mount - AVX Focal Reducer/Barlow - none Filters - none Exposure length - 20s Stacks - 10 Software - Starlight Live Settings (Gain 60%, high saturation, etc) - Any Processing (on-the-fly, post-processing) - none Conditions (80% Moon, windy, bad light pollution, etc) - Red/Orange Zone, no moon General Location (Town or area & State & Country) -
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Post by howie1 on Oct 24, 2017 23:31:15 GMT
I am always impressed by the images I see from the Ultrastar-C and Starlight Live combination, Robert. Great image of M31! And 10x20sec isn't too long either.
That 'short' exposure you use is one of the reasons I like watching some guys in Hawaii on NSN also Ultrstar-C + Starlight Live combo, as they too are only a few stacked images of reasonably short duration ... unlike the latest tendancy of NSN broadcasts which have been basically "Live AP" rather than NRTO. I recently watched a 75 minute exposure on one target! 2 or 3 minute frames stacking ... and stacking ... and stacking ... and stacking. LOL. Absolutely beautiful image resulted and whatever floats your boat if you like that really long wait ... but ... I am sure I actually felt my bones growing while I watched!!!!
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Post by Deleted on Oct 25, 2017 1:09:15 GMT
OK someone had to do it - NGC253 Camera - GStar Ex3 IMX178 2x2 14bit RGB Telescope - 200/1000 Newt Mount - HEQ5 Focal Reducer/Barlow - x0.8 Filters - none Exposure length - 20s Stacks - 7 Software - ToupSky (camera control); Astrotoaster (Stacking - only) Settings - Gain 18% Gamma 0.55 Histo 0.55 contrast up a bit Any Processing - Auto dark subtraction, no post processing. Conditions - Moon 13%, some sky glow in that area from Ipswich/Brisbane General Location Esk, QLD, Australia
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robrj
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Post by robrj on Oct 25, 2017 1:33:25 GMT
I am always impressed by the images I see from the Ultrastar-C and Starlight Live combination, Robert. Great image of M31! And 10x20sec isn't too long either. That 'short' exposure you use is one of the reasons I like watching some guys in Hawaii on NSN also Ultrstar-C + Starlight Live combo, as they too are only a few stacked images of reasonably short duration ... unlike the latest tendancy of NSN broadcasts which have been basically "Live AP" rather than NRTO. I recently watched a 75 minute exposure on one target! 2 or 3 minute frames stacking ... and stacking ... and stacking ... and stacking. LOL. Absolutely beautiful image resulted and whatever floats your boat if you like that really long wait ... but ... I am sure I actually felt my bones growing while I watched!!!! The longest I go is typically about 45 seconds. If someone else is watching with me, I keep it to 30 seconds or less. I've done 1 minute or longer but it usually requires that I guide. The M31 would have been better if I had taken darks and turned on Defective Pixel Removal. I took darks after M31.
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Post by ChrisV on Oct 25, 2017 8:36:57 GMT
There's some nice galaxies above. I've done the same as you Robert = NGC253. Sorry, but I looked this month's saved objects and they were virtually all nebulae or the occassional cluster Telescope - 200/1000 Newt Mount - CGEM Focal Reducer/Barlow - ~0.7 Filters - none Exposure length - 20s Stacks - 15 Software - Sharpcap Settings - Gain 250 Any Processing - stacking and histogram stretch in sharpcap no post processing. Conditions - not too bad General Location - Turramurra, Sydney
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elpajare
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Post by elpajare on Oct 25, 2017 9:13:53 GMT
One Silver Coin more SKYWATCHER 200/800 + Risingtech IMX224+Risingsky software
10x15" stack/mean+ Gain max.+ All settings by default
Adjust levels, contrast and soft Selective Gaussian Blur wit GIMP
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