Rob,
See below.
Bernard
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Rob Baldwin
Sent: Sunday, February 11, 2018 8:56 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: M42 (The Orion Nebula)
I agree - The Orion Nebula never gets old. It is one of my backyard
binocular targets this time of year. I think it is a great image. Two
questions:
I agree - The Orion Nebula never gets old. It is one of my backyard
binocular targets this time of year. I think it is a great image. Two
questions:
- The color seems very pink-red, do different exposure times bring out more,
or different colors? Or is this from filter selection and image stacking?
I use a program called Excalibrator to color balance my images. It finds all
the G2V stars in an image and calculated RDG weights needed to make those
white. I think the nebula should be a slight pink color since the hydrogen
will emit red, but the intense white light from the Trapezium should give
that red a slightly pink hue. In any event, Excalibrator has always given my
M42 images a pinkish hue so that is what I go with.
- The larger stars in the image have "starburst" effect. Is this an
artifact of long exposure times, the filters used, or something else?
I think this is an effect produced by the brightness of the star together
with the surrounding nebulosity. The filters may also play a part.
Again, great image. It makes me want to get off the couch and go to see if
it is visible. Even if it is, the view won't be nearly as nice as this.
Well done!
Rob
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Bernard Miller
Sent: Saturday, February 10, 2018 10:23 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] M42 (The Orion Nebula)
Hi,
Okay, it has been imaged by everyone on the planet with a telescope and
camera, but it never gets old. This is my version of the Orion Nebula in
LRGB. I did a narrowband version s couple of weeks ago and this is the same
FOV in LRGB. This is an emission nebula about 1500 light years away in the
constellation Orion.
Comments and suggestions appreciated.
http://www.azstarman.net/CDK/M42.htm
Thanks,
Bernard
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