M42 and Running Man

[Paul Haese]

Another image out of the FSQ85 at Swan Reach Imaging. It's a great little subscription scope and this gives you an idea of what you can achieve with 5 or so hours of data. I love the dust this scope can bring out so quickly.

Click here (http://paulhaese.net/M42FSQ85.html) for the larger image

[alpal]

Hi Paul,
that's a beautiful picture.
I wish the whole sky could be done like that -
at least from Orion over to the Flame Nebula.


One small thing - only important for pixel peepers -
I noticed it too on your Pleiades picture - and NGC2170 picture -
there seems to be "black wedges" on your very bright stars.
I wonder what is causing that?
Could it be aperture vignetting as per here?
https://www.cloudynights.com/topic/547028-anyone-know-what-causes-this-artifact-on-bright-stars/


cheers
Allan

[Dave882]

That's an unbelievable capture!! The IIS compression kinda killed it but the full size is seriously next level. I love how translucent and luminous those intricate strands of dust are. Wow, I'm not sure I've seen that kinda detail before

[CoolhandJo]

Wide and deep very nice work

[Paul Haese]

Hi Allan,

I had thought this was the problem that all FSQ's had at one stage and simply ignored it. However, I'll check the filter wheel positioning on my next visit up to the Reach and see if it needs recalibrating. That might be cutting something off just a little.

I am pretty sure it is not the focuser or anything forward of the filter wheel. Though it could be the flattener. An out of focus shot before I go up should tell the story.

Doing this whole region might be a mission. Though Jarrod Koh has recently done a super wide field image with very similar results.



Thanks for the compliment. The dark skies we have help and I have now relearnt how to process one shot colour, which is probably contributing a fair bit.



Thanks Paul.

[RyanJones]

Wow Paul. That’s a lovely image. So soft and natural.

Ryan

[alpal]

Thanks Paul for your reply.
I was going to say - the filter wheel but then I saw that it was a color camera -ZWO 2600MC -
so I thought you had no filters.
It must be something cutting off the light to the sensor.
Sensor size is 23.5 x17.5mm so I assume you are using 2" filters?

Jarrod Koh has done some great work:
https://www.facebook.com/JarrodKohPhotography/photos

cheers
Allan

[atalas]

Excellent :thumbsup::thumbsup::thumbsup:

Al,the artifacts are coming from the retaining clips of the FSQ objective....I use to get It on all my FSQ's....even the EDIII with the long exposures.

[alpal]

Thanks Louie,
I'm not sure what you mean -
do you have a photo of those retaining clips to point that out for Paul?

cheers
Allan

[atalas]

No I've never pulled one apart, but this has been discussed here and on CN many times and apparently has something to do with the way the objective is secured.

Tak addressed the issue somewhat in the ED models but It was still there on my EDXIII on some of the brightest stars just not as pronounced.

[alpal]

OK - isn't it true that some people who fiddled with those screws
took their refractor out of collimation and weren't able to
fix it at home meaning they had to send it back to the manufacturer -
in this case Takahashi in Japan at great expense?

[gregbradley]

Definitely an effect associated with the FSQ106N. My 106EDX111 though did not do it. Roland Christan said once it was vignetting. I never really understood that but I have seen this same effect on some other scopes.
With the FSQ106N it was more of a cross rather than a bar.
Greg.

[atalas]

Never herd of an FSQ being out of collimation or anyone messing with them Al
but anyway that's not the case here....mine have all been perfect collimation.

[atalas]

Yep that's true Greg and my FSQN had It, and the BabyQ, and also the EDXIII on bright stars but you could hardly see It.....If I could be bothered (but I can't)I'm sure If I went through old data I could find some examples in the all FSQ's I've owned.

[Addos]

smokey! great shot paul!