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06-06-2014, 02:33 PM   #1906
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QuoteOriginally posted by Cowboy Quote
Two from me as I continue learning on (and enjoying) my K30...
Awesome pictures, congratulations !! And welcome to the PF !!

06-06-2014, 04:05 PM   #1907
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Very nice Cowboy
06-06-2014, 04:22 PM   #1908
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Agreed, welcome to PF, and you chose a fine pair of photos to introduce yourself.
06-07-2014, 06:07 PM - 2 Likes   #1909
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O-GPS1 Astrotracer

Greetings everyone,

Had another go with the astrotracer last weekend when camping on the shore of Lake Champlain NY. Had the opportunity to try my new Tokina AT-X 828 80-200 f/2.8 (manual focus). I'm a bit disapointed by it. CA not as bad as I expected but star images are far from being point like. But I cannot really complain since this is a 220$ lens and not a 2200$.


1- M8-M20 6 X 20 s iso 2000 with Tokina @ 200 f/2.8



2- Antares - M4 and some of rho Ophiucus nebulosity 6 X 30s iso 2000 with Tokina @ 200 f/4.0



3- The Milky Way over Lake Champlain NY. Burlington VT is on the horizon. 2 min with 18-55 f/3.5-5.6 AL WR @ 18 mm f/3.5



4- The Lion and Coma Berenices setting in the West. 1 min with 18-55 f/3.5-5.6 AL WR @ 18 mm f/3.5



06-08-2014, 05:07 AM   #1910
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xpost from 50mm thread


06-08-2014, 07:55 AM   #1911
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Nice...
06-08-2014, 01:23 PM   #1912
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QuoteOriginally posted by SunValley Quote
Greetings everyone,

Had another go with the astrotracer last weekend when camping on the shore of Lake Champlain NY. Had the opportunity to try my new Tokina AT-X 828 80-200 f/2.8 (manual focus). I'm a bit disapointed by it. CA not as bad as I expected but star images are far from being point like. But I cannot really complain since this is a 220$ lens and not a 2200$.


1- M8-M20 6 X 20 s iso 2000 with Tokina @ 200 f/2.8



2- Antares - M4 and some of rho Ophiucus nebulosity 6 X 30s iso 2000 with Tokina @ 200 f/4.0



3- The Milky Way over Lake Champlain NY. Burlington VT is on the horizon. 2 min with 18-55 f/3.5-5.6 AL WR @ 18 mm f/3.5



4- The Lion and Coma Berenices setting in the West. 1 min with 18-55 f/3.5-5.6 AL WR @ 18 mm f/3.5


Great pics. There's a little coma in the first one - but not in the second, where you've stopped down. Have you tried longer exposures using the astrotracer? I've managed two minutes (at f/5.6) with my 135mm without trailing:


M42 in Orion (with starbursts) by -Occasionally Focused-

(That's a single exposure, btw.)

I particularly like that Milky Way over Lake Champlain; the terrestrial light/lights somehow add to it.
06-08-2014, 02:06 PM   #1913
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@Tsuken Thanks for your comments. Wow 2 min with a 135! And right on the equator too! An excellent shot, the center of the nebula is not overexposed! The most I get most of the time is between 40 to 60 sec with my 135 and 30 to 40 s with my smc Pentax-M 200 f/4. I think the Tokina may not be exactly 200 mm by Pentax standards. I'll have to test this with my M lens.

Stopping down helped a bit but the lens has sort of a softfocus effect that spreads the light of the stars on a big surface. I guess I'll have to save up to get that smc Pentax-A* 200 2.8 ED lens.

06-08-2014, 09:50 PM   #1914
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QuoteOriginally posted by SunValley Quote
@Tsuken Thanks for your comments. Wow 2 min with a 135! And right on the equator too! An excellent shot, the center of the nebula is not overexposed! The most I get most of the time is between 40 to 60 sec with my 135 and 30 to 40 s with my smc Pentax-M 200 f/4. I think the Tokina may not be exactly 200 mm by Pentax standards. I'll have to test this with my M lens.

Stopping down helped a bit but the lens has sort of a softfocus effect that spreads the light of the stars on a big surface. I guess I'll have to save up to get that smc Pentax-A* 200 2.8 ED lens.

Thanks. Odd that you're not getting as long. I have read that it varies quite substantially depending on what but of the sky you're aiming at. Accurate calibration is a big thing too; I've had abject failures down to just not getting it quite right.
06-09-2014, 04:29 AM - 1 Like   #1915
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Taken in Far North Queensland, Australia.

Last edited by curlednoodles; 08-03-2016 at 08:36 PM.
06-09-2014, 04:34 AM - 1 Like   #1916
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Another from Far North Queensland, Australia.
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06-09-2014, 05:45 AM   #1917
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QuoteOriginally posted by curlednoodles Quote
Another from Far North Queensland, Australia.
Those pics make me want to pack my bag and jump into the next plane. Very idyllic.
06-09-2014, 09:02 PM   #1918
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Little tree in a sandy area, K30 + M50mmf1.7,

Last edited by Jorgario; 07-09-2014 at 08:24 PM.
06-10-2014, 08:54 AM - 4 Likes   #1919
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Dandelion seed,
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06-10-2014, 01:51 PM   #1920
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Took a stroll through the Local Community Trail.......












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