Some photos...
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 Team
'Bermuda' |
 Team
'Tarot' |
 Team
'Jackals' |
 Analysing
data |
 Analysing
data |
 Group
photo and Milky Way |
 Group
photo and Milky Way |
 Group
photo and Milky Way |
 In awe of
the Universe |
 Group
photo and observatory |
Some panoramas... |
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Some astrophotography... |
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Objects visible in image: Antares (red
star, with nebulosity, below centre)
Rho Ophiucus (blue star, with nebulosity, above centre) M4 globular cluster (right of Antares) Dark nebulae stretching off to top left |
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Objects visible
in image: M16 Eagle Nebula
(centre top)
M17 Swan Nebula (below M16) Sagittarius Star Field (centre) M20 Trifid Nebula (right of centre bottom) |
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 Milky Way in Sagittarius and Scorpius Mosaic of four 4-minute exposures |
Objects visible
in image: M20 Trifid Nebula
(top left)
M8 Lagoon Nebula (below M20) Antares (red star, with nebulosity, far right) Rho Ophiucus (blue star, with nebulosity, above Antares) M4 globular cluster (right of Antares) Click here for a pdf of the image labelled with Messier objects |
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| Astrophotography
images
taken
with Nikon D7100 DSLR + 85mm f/1.8 lens Processed from JPEGs with no darks and no flats ( Stacking multiple RAW images, subtracting darks ) ( and dividing by flats should improve the quality. ) ( I will get around to doing this -- watch this page for updates ) |
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Tracking the starsThe image on the left demonstrates the need for the camera to track the apparent movement of the stars during long exposure astrophotography. Even with a wide-angle lens (here 35mm) the stars will produce short trails after only a few seconds.I have designed and built my own star tracker (see K2 star tracker for details) and have also used a commercial product, the iOptron SkyTracker. |
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Steve Barrett June 2013 |
( except those marked with * ) |
