Search found 852 matches

by AndyG
Thu Dec 06, 2018 3:24 am
Forum: The Imager's Studio
Topic: M1 Crab Nebula
Replies: 9
Views: 3555

Re: M1 Crab Nebula

Great image Roger! Very nicely processed. One thing I noticed was for a long time the guiding was almost spot-on ... very little corrections, then for a while there would be almost constant corrections (I believe in DEC?). Then it would settle back down. I don't know if this is Periodic Error or som...
by AndyG
Thu Dec 06, 2018 3:19 am
Forum: The Imager's Studio
Topic: Mark M's Exoplanet Transit Photometry Project
Replies: 29
Views: 10757

Re: Exoplanet Project (#1)

Congratulations Mark! You nailed it on the first attempt!
by AndyG
Mon Dec 03, 2018 11:29 pm
Forum: The Imager's Studio
Topic: Mark M's Exoplanet Transit Photometry Project
Replies: 29
Views: 10757

Re: Exoplanet Project (#1)

That's great you got the drift guider ready for testing. Hope you get some clear skies. If you think that adding a focal reducer might make things easier I've got a couple lying around unused if you want to borrow one: an AP CCDT67 (~0.67x) and a Meade f/3.3 (~0.33x). If I recall correctly the AP CC...
by AndyG
Sun Dec 02, 2018 5:29 pm
Forum: The Imager's Studio
Topic: Mark M's Exoplanet Transit Photometry Project
Replies: 29
Views: 10757

Re: Exoplanet Project (#1)

Yeah, I agree, traditional guiding would have no problem keeping the guide star centered to withing a single pixel over several hours. But field rotation around the guide star and the differential motion of the two sensors you get with a separate guide scope would be show-stoppers for keeping the ta...
by AndyG
Sun Dec 02, 2018 4:05 pm
Forum: The Imager's Studio
Topic: Seeing here, seeing there
Replies: 8
Views: 2824

Re: Seeing here, seeing there

Yes, I like really like that last one!
by AndyG
Sun Dec 02, 2018 4:05 pm
Forum: The Imager's Studio
Topic: Mark M's Exoplanet Transit Photometry Project
Replies: 29
Views: 10757

Re: Exoplanet Project (#1)

Thanks for the write-up, this is a fascinating topic and I'm really looking forward to hearing how it goes.
by AndyG
Sun Nov 25, 2018 11:15 pm
Forum: The Imager's Studio
Topic: M33 Pinwheel Galaxy
Replies: 4
Views: 1878

Re: M33 Pinwheel Galaxy

Wonderful image of a fascinating target!
by AndyG
Sun Nov 25, 2018 11:15 pm
Forum: The Imager's Studio
Topic: M42-The Great Orion Nebula
Replies: 6
Views: 2251

Re: M42-The Great Orion Nebula

Great image Tim!

Thanks for sharing the heat and keeping us warm out there. Though I still think it's cheating :)
by AndyG
Sun Nov 25, 2018 11:15 pm
Forum: The Imager's Studio
Topic: Blue Snowball (NGC 7662)
Replies: 7
Views: 3018

Re: Blue Snowball (NGC 7662)

That's great, Roger. I love how you were able to image the detail within the nebula.
by AndyG
Sun Nov 25, 2018 11:14 pm
Forum: The Imager's Studio
Topic: IC1396 area
Replies: 13
Views: 4478

Re: IC1396 area

Gorgeous image!