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Forum: Monthly Photo Contests
02-28-2015, 03:10 PM
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Full Moon was photographed during excellent conditions in 2011 with 125/950 mm apolar telescope.
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Forum: Monthly Photo Contests
02-22-2014, 06:34 AM
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Home Tree Home. Great Spotted Woodpecker (Dendrocopos major).
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Forum: Monthly Photo Contests
10-31-2013, 01:06 PM
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Messier 31 galaxy photo was taken on September 12, 2012, with SW ED80 telescope + Williams Optics 0,8x focal reducer + Pentax K-x. Exposure times were 30, 60 and 90 seconds ISO1600. Total exposure time was 14 minutes. Photos were stacked with DeepSkyStacker and the final photo is a combination of three levels with PS CS5. Exif-data was lost because of stacking.
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Forum: Pentax K-5 & K-5 II
08-16-2013, 04:34 AM
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There is just a nova brightening in Delphinus. I managed to get two photos on Aug 15 at 2100UTC with K-5 & oGps Astrotracer.
Picture no 1 135/2,8 35 s. ISO800 and picture 2 50/2,8 55 s.
The arrow of Sagitta is directed towards this nova! The brightness of the nova was 5,5 mag, it could be seen with naked eye. It is expected that the nova will brighten more during coming weeks.
Jorma Mantyla
Kangasala
Finland
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Forum: Monthly Photo Contests
08-10-2013, 08:03 AM
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Scarce copper, Lycaena virgaureae, is a bright copper-red butterfly. Usually seen in Finland in July during sunshine. This photo was taken in Siikainen, western Finland.
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Forum: Monthly Photo Contests
03-18-2013, 10:28 AM
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A silent island on Lake Roine in Finland below aurora and the constellation of Leo.
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Forum: Photographic Technique
01-05-2013, 04:21 PM
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This photo was taken today 5.1.12 at 16.55 UTC. Luckily comet C/2012 K5 Linear and a meteoroid appeared in the same photo.
Pentax K-5 50/2 50 seconds ISO800 + oGps Astrotracer.
The photo was not 100% accurate, thus I have a little bit edited it.
Jorma Mantyla
Kangasala
Finland
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Forum: Photographic Technique
12-25-2012, 12:26 PM
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I add one more photo taken with oGps Astrotracer. The Milky way on Aug.14, 2012, in Kangasala, Finland:
Pentax K-r 14/2,8 2,5 min ISO800.
Jorma Mantyla
Kangasala
Finland
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Forum: Photographic Technique
12-24-2012, 02:35 AM
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It was -13 in Inari on Nov. 14.
Here is a new photo of comet C/2012 K5 (LINEAR) close to star Dubhe of Big Dipper:
Pentax k-5 50/2,8 + Astrotracer 3x50 s. ISO800 + DSS.
When this photo was taken in Kangasala it was -20 on Dec. 23 at 7.11 am. Pentax oGps Astrotracer greatly helps aurora and astrophotography in coldness because the equipment is very easy and quick to use. I took this photo of comet Linear 5 minutes after seeing that the sky is clear after long cloudiness. I have also astro-mounts with autoguiding but preparing them for use takes 1-2 hours.
With 14 and 50 mm lenses practically all photos are accurate. When I use 135 or 200 mm telephoto lenses the number of unaccurate pictures increases.
Edit. The lens used was Smc Pentax-M 1:1,7 50 mm. I think this lens was made in the 1980's for film cameras.
Merry Christmas & Happy New Year 2013 from Finland.
Jorma Mantyla
Kangasala
Finland
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Forum: Photographic Technique
12-21-2012, 04:02 PM
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Pentax Astrotracer is an excellent tool in aurora photography. I took these two photos in Inari, Finland, on November 14, 2012, with Pentax K-r and oGps Astrotracer.
Exposure time was 60 seconds with ISO 1600. With naked eye I could see only green and some red lights but 60 second exposures show also blue/pink aurora. 30 second exposure showed mainly green aurora. Lens was Samyang 14/2,8.
I consider Pentax oGps Astrotracer as an important invention in aurora photography.
Jorma Mantyla
Kangasala
Finland
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