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| M81- Image by Peter W. O'Brien with Meade's Deep Sky Imager.
Meade 10" LX200 Telescope. [Click
to Enlarge] |
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Peter W. O'Brien writes of his M81 image taken from Derry, New Hampshire
with the Deep Sky Imager and his 10"
Meade LX200:
"After my first few successful attempts with the deep
sky imager I was spurred on till late night, waiting for the galaxies
M81 and M82 to be high in the sky. Being a neophyte to this end of
digital imaging and adhering to the philosophy that "if a little is
good a lot is better" I set both gain and offset to the maximum. I'm
still amazed by the brightness of the central bulge of M81 with a
1sec Auto exp setting, unbelievable in a 30 sec preview. After the
software stacked a few dozen frames I was quite happy. Faint knots
of extra-galactic nebulas within the spiral arms could be discerned
.... (New to me!) . However it wasn't until in post production the
next day when I started to fiddle with levels and contrast that I
was truly blown away by the wealth of signal detail buried in that
image. I admit that I do feel a little sad at the passing of film,
but WOW.
In the past few months I have been seeing and doing more deep sky
stuff than I can remember. I'm on the learning curve now. Next time
I'll be saving fits file format. Today with the DSI and the multitude
of digital tools available; stitching, stacking, masking, et al, the
sky is the limit or more precisely the limiting factor.
Thank you Meade for giving back the night." "Ironically,
for years I have been designing CCD anti-reflection thin films for
some of the worlds' largest terrestrial and space telescopes... And
it's your 1/4 mega-pixel device that has excited my interest in their
use."
Peter W. O'Brien
Derry, NH
Peter O'Brien has been with the quantum electronics group at MIT Lincoln
Laboratory since1995 and has run the MIT Lincoln Laboratory optical
thin film laboratory since 1999.
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