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The new camera for the
upcoming RASA 11 is here, I took advantage of the 25% off year
end sale and saved about $500 here by buying it a few weeks earlier
than planned. This camera has the IMX455 chip in it with a 35mm
sensor, backlit cmos technology, and is 62 mpixels. This mono
camera will take full advantage of the Rasa because the 11 inch
will have filter drawers to swap out various filters such as
RGB or Halpha without tearing the whole camera mount apart like
I have to do now with the 8" RASA.
This shot was one hour
with the IDAS NBZ-2 filter and 20 mins each RGB filters. The
big surprise here was first - the Nexus coma corrector on the
10 inch is only supposed to cover an APS-C sized sensor but here
we still have really good stars even in the corners with the
full frame chip. Second, the Baader RGB filters required a 1:1:1
ratio to achive G2V calibration! This is very different than
the Astronomik filters I use with my CCD camera, which i have
to double the blue to get the colors right.
The Rasa 11 will be
coming about mid January and at first, there will be a few early
test shots I will share as they become available. Eventually
after that, it gets moved to our second observatory in Happy
Jack with Bortle 1 skies at 7000 feet. Stay tuned.
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