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12-14-2014, 10:16 AM   #61
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QuoteOriginally posted by JimmyDranox Quote
Woooow. One of the most spectacular astrophoto I've seen this year. And I've seen a lot. Congrats.
Thanks !

---------- Post added 12-14-14 at 06:17 PM ----------

QuoteOriginally posted by jbinpg Quote
Very nice. You can sense the sweep of the Milky Way's Orion Spur in which we reside:

A map of the Milky Way | Galaxy Map

Jack
Thanks, a little bit hard to understand, but very interesting !

12-15-2014, 08:33 AM   #62
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QuoteOriginally posted by ZeGaby Quote
The Gateway


This picture was made with an iso bracketing.
Using 1600/3200/6400 iso added like an HDR with Photomatix
K3 - Sigma 18-35mm f/1.8 @ f/2.0
Stellar photo! Interstellar even
01-15-2015, 12:44 AM - 1 Like   #63
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Comet C/2014 Q2 (Lovejoy)

Skies have been socked in for two weeks here. Tonight the clouds parted momentarily, long enough to image the current Comet C/2014 Q2 (Lovejoy) now in Taurus. Both seeing and transparency were marginal and the stars were like reflections in a pool rather than steady beamers. No hope of seeing its long tenuous tail that streams out past the left of the frame. Didn't get enough for a stack so here is a single frame with the K-3, ISO1600, 30 seconds, f/4.5, DA*300, AstroTrac TT320X tracking mount. Hoping to have better conditions now that the New Moon is nigh.- Jack
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01-22-2015, 01:00 PM - 3 Likes   #64
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QuoteOriginally posted by jbinpg Quote
Skies have been socked in for two weeks here. Tonight the clouds parted momentarily, long enough to image the current Comet C/2014 Q2 (Lovejoy) now in Taurus. Both seeing and transparency were marginal and the stars were like reflections in a pool rather than steady beamers. No hope of seeing its long tenuous tail that streams out past the left of the frame. Didn't get enough for a stack so here is a single frame with the K-3, ISO1600, 30 seconds, f/4.5, DA*300, AstroTrac TT320X tracking mount. Hoping to have better conditions now that the New Moon is nigh.- Jack
Beautiful !


My last picture, is a reedition of a previous picture of the Milky Way :

The Gateway - Colors of the night


but this time i used an Orton effect on the Milky Way....

01-30-2015, 09:11 AM   #65
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Hi,
I was happy to have a cloudless evening on the 17th of January and caught some pics of Lovejoy too.
I used a K-5 with O-GPS-1 and 15 second exposure time at 200 mm and 70 mm. The first was made with an Olympus OM-D em5 with 195 x 4 seconds exposure time to compare results with Pentax K-5 and O-GPS. All but the shot with the plane, that is a single photo, were stacked with DeepSkyStacker. PP was made with Fitswork, Lightroom and Photoshop CC
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01-30-2015, 10:42 PM   #66
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Awesome definition on the tail! The later K series cams make great astro machines..
01-31-2015, 05:32 AM   #67
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QuoteOriginally posted by Pete_XL Quote
Hi,
I was happy to have a cloudless evening on the 17th of January and caught some pics of Lovejoy too.
I used a K-5 with O-GPS-1 and 15 second exposure time at 200 mm and 70 mm. The first was made with an Olympus OM-D em5 with 195 x 4 seconds exposure time to compare results with Pentax K-5 and O-GPS. All but the shot with the plane, that is a single photo, were stacked with DeepSkyStacker. PP was made with Fitswork, Lightroom and Photoshop CC
Well done !
01-31-2015, 06:06 AM   #68
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QuoteOriginally posted by ZeGaby Quote
The Gateway


This picture was made with an iso bracketing.
Using 1600/3200/6400 iso added like an HDR with Photomatix
K3 - Sigma 18-35mm f/1.8 @ f/2.0
wow very nice!

02-11-2015, 02:13 PM - 1 Like   #69
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New pics with my OGPS-1 and my Tamron 70-300mm



Iso800 40s. 300mm f/5.6

Last edited by ZeGaby; 02-11-2015 at 02:29 PM.
02-12-2015, 01:24 AM   #70
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[New pics with my OGPS-1 and my Tamron 70-300mm]



Nice shot of Orion nebula and "running man" nebula above (NGC 1977). Orion is tricky because of the extremely bright stars inside and the faint exterior.



I also have something to try out - my new (used) Sigma 2.8 70-200 mm. Tonight the stars will shine bright around here . I will go out and get me some onto the sensor .



Your OPS-1 seems tro track better than mine. Mine produces trails above 15 s. exposure time at 200 mm.



Peter
02-12-2015, 10:33 AM   #71
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QuoteOriginally posted by Pete_XL Quote
[New pics with my OGPS-1 and my Tamron 70-300mm]



Nice shot of Orion nebula and "running man" nebula above (NGC 1977). Orion is tricky because of the extremely bright stars inside and the faint exterior.



I also have something to try out - my new (used) Sigma 2.8 70-200 mm. Tonight the stars will shine bright around here . I will go out and get me some onto the sensor .



Your OPS-1 seems tro track better than mine. Mine produces trails above 15 s. exposure time at 200 mm.



Peter
Thanks !

I've made two calibration during my shooting and i've made this picture after the second calibration.
02-12-2015, 01:41 PM   #72
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QuoteOriginally posted by Pete_XL Quote
Your OPS-1 seems tro track better than mine. Mine produces trails above 15 s. exposure time at 200 mm.
I like to watch pictures of stars, but I have no idea how this little gadget is working. I need to google more about this subject.
Just with a K3 and a 300mm lens can I shoot what kind of stars?
02-12-2015, 02:14 PM   #73
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QuoteOriginally posted by semaca Quote
I like to watch pictures of stars, but I have no idea how this little gadget is working. I need to google more about this subject.
Just with a K3 and a 300mm lens can I shoot what kind of stars?
My last picture was shoot with the Tamron 70-300mm at 300mm no crop....
02-13-2015, 01:15 AM   #74
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QuoteOriginally posted by semaca Quote
Just with a K3 and a 300mm lens can I shoot what kind of stars?

Basically with a K3 and a propper 300 mm lens you can shoot the main (bigger and brighter) deep sky objects like Andromeda, Orion Nebula, Plejades in stunnig quality - wether you have OGPS-1 or not. I have attached some reduced examples of Andromeda, the North America Nebula and Orion Nebula. They are not my best but may give an idea.

OGPS-1 compensates earth's rotation for a while by moving the sensor adequately so that more light gets onto the sensor in one shot without stars making trails. My OPS gives me 10-20 x more exposure time without star trails.

Without OGPS-1 you can shoot the same objects but the exposure time is limited to approx. (500/(focus length x crop factor)) what is about a second time for a 300 mm lens depending on the direction you shoot. Because in this one second you catch only few photons the single picture would be to dim. The technique is to shoot a series of single shots in RAW at high ISO and open aperture (20 to >100 interval shots) and stack the photos, preferebly in a freeware like DeepSkyStacker or another Software that rotates and registers the photos. Stacking also reduces noise and there are several techniques to get the maximum out of your raw data in post processing software. Sounds complicated but is not - to fix a propper dinner in the kitchen is more difficult.


Stacking photos improves also the quality of photos that are shot with OGPS dramatically!





07-11-2015, 01:51 PM - 1 Like   #75
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Some pics from my last session :

Look !


Starry Car
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