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StargeezerTim

Show us your one sub images!

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Sorry for lowering the tone of this esteemed forum but I got so fed up with clouds that I processed the one sub of NGC 7000 I got the other night. 5 mins, iso 800, flats and bias applied. PS. I jogged the mount, hence the odd stars, sadly not able to use sigma clipping on one sub :iamwithstupid:

Anyone brave enough to add their one sub efforts?  

597b8aa84d171_AutosaveNGC70001sub.thumb.png.d67b4d9caf05f03087ad398a30d1caca.png

 

 

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not a bad one sub.. imagine if you had 20 of them... 

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4 minutes ago, MarsG76 said:

not a bad one sub.. imagine if you had 20 of them... 

One can only dream.....

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I'll play seeing as clouds are quite thick tonight. :clouds2:

One 600sec Ha sub binned 2x2, and masked stretch in PI.

atiklights_122_ABE.jpg.9858f1aec3513dfdbda787f5352fe374.jpg

 

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I'd like to see some unprocessed single subs, specially solar system.   :icon_biggrin:

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32178557961_e02e0f9599_b.jpg

Here's a single 4-minute sub of M42 (ED120), after a rough colour balance.

31190842023_2c7e6a9bac_b.jpg

And a 2 minute M31 (135mm lens), taken by my 7 year-old nephew and processed by me (colour balancing as it was taken with a modded camera, and de-noised a bit).

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Random two minute sub of the Blackeye Galaxy. Tweaked in PSP which I have hardly used before...

597b9b01bc050_Blackeye(117)-1.thumb.png.ce72c989831812fe584eec846cacc6cd.png

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40 minutes ago, wxsatuser said:

I'll play seeing as clouds are quite thick tonight. :clouds2:

One 600sec Ha sub binned 2x2, and masked stretch in PI.

atiklights_122_ABE.jpg.9858f1aec3513dfdbda787f5352fe374.jpg

 

Looks familiar! Fab detail...

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thats a cracking single sub Tim 

here is M27 eos 1100D 900 second and ngc 6960 at 900 second both at iso 800 both unprocessed.

 

IMG_0044.JPG

IMG_0004.JPG

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Somebody asked for a planetary one shot sub.......

In my PLANETS folder it is labelled   "1.jpg"   my very first attempt at photographing Jupiter.  C6 with Panasonic GF1 (June 2016) ....cannot remember if it was prime focus or eyepiece projection Probably about a 1/10th of a second....

1.jpg.26d6a7d475a1b1b09068ee5f0d9fe77c.jpg

 

 

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M51, 600sec, ISO 800, EOS 500D, JPEG from Raw, no processing, LX200GPS native F/6.3 (spot the coma...)

Michael

597bbc2d2de73_IMG_0017-1.thumb.jpg.91f73513a3e6e1e18bc86865be84eec2.jpg

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30 minutes HA California Nebula

Dave

California-neb-005HA3.png.ed61d41192d0bc1b3d0a7ba9fe988b2d.png

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L_0062_ISO800_900s__32C.thumb.JPG.7941b5ee6ad35342442a1b6fe168b3d5.JPG

Here's a 15 minute sub of the Helix.

Straight out of the camera last night (one of many). I haven't done anything more than look at this, so I can't say what its potential is.

Equipment: ED80 + 0.85 FR. HEQ5 + 1100D camera

 

Edited by pete_l
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Screen grab of one frame from an SER video captured using ASI 120MC. The screen grab means the 12 bit video has been reduced to an 8-bit image.

Cropped and wavelets in registax, nothing else. Only just noticed the two moons at left!

597c41aa38178_Jupiteroneframe.png.106f44ebec12e2e78871118e17403007.png

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A single calibrated Lum sub of 600s of M51, unprocessed - apart from a DDP stretch, in order that you can see it !

597ca0684fe67_M51Lum600scalibrated.thumb.jpg.a789060a3a308a0568f00514748592cd.jpg

If anyone is interested, this is normally my thought process when examining individual subs:

1 I have couple of dust doughnuts that haven't been taken out by the flat. Although not ideal, I've found quite a good technique to eliminate these in PS. 

2. I also have quite a few hot pixels, although these would be taken out through the subsequent stacking process (since all my subs are dithered). However, the number of hot pixels indicates that it's time for me to take some more dark frames (I haven't taken them for more than 7 months). 

3. I have a slight gradient which I presume is caused by the moon, since I image from a low light pollution area.  This is not a problem, since when the images are stacked, I'll use DBE to remove this. 

4. The aspect ratio of the stars is very good (I normally put all my subs through CCDInspector in order to check things like aspect ratio, average FWHM etc etc.).  Since I now image unguided, I focus particularly on the star aspect ratios, if these rise, then it might be an early indicator that a new sky model is required.

5. The average star has a FWHM of 4.2pixels, measuring a few individual stars seems to confirms this, so at my imaging scale, this indicates that the seeing is about 2.9 arc seconds, which is about average for my site. 

6. The stars and galaxy doesn't appear to be causing any camera saturation.

Alan

Edited by alan4908
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With the state of the weather and speed at which I'm gathering data for this image, a single sub pic seems like a good idea... 30 min Ha (with the E130D and G3-16200 CCD), bias subtraction, defect map, a light stretch and some curves. Some random squiggly bits that normally get sigma clipped out are still lurking in there.

Paul

 

597cc3d294ec0_singlesubNGC6888brighter.thumb.jpg.7c4bbb74317d0a2bcbeccc3391d1aea9.jpg

 

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This has to be the best single sub shot yet, if there was a competition this would win it hands down :)

Thanks for looking

Nige.

 597cc9f9b5c13_ussrsub.thumb.JPG.53dc48922041a150fd4821fdd39c6441.JPG

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8 minutes ago, Nigel G said:

This has to be the best single sub shot yet,

Yes. It would be very interesting to see a stack of those!

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25 minutes ago, Nigel G said:

This has to be the best single sub shot yet, if there was a competition this would win it hands down :)

Gauntlet picked up, challenge accepted, google image search engaged.

seabreacher2.png

(Taken from here.)

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Some of these single subs beat my multi-hour stacks hands down... especially, but not exclusively, the daylight ones! :hello2::help:

Edited by StargeezerTim
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Brillient Olly ha ha ha

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This was a single sub with my 16" Dob. I can't remember exactly how long the exposure was because it's stored on my iPad but from memory think it was 10 seconds. 

IMG_1828.JPG.76b3f9927b14e4468d001f2c70939384.JPG

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