• Welcome to Orpington Astronomical Society.
 

News:

New version SMF 2.1.4 installed. You may need to clear cookies and login again...

Main Menu

Weird Artifact in OSC Sub.

Started by ApophisAstros, Aug 25, 2021, 21:40:48

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

ApophisAstros


2021-08-24_23-49-21_Bin1x1_150s__-20C_sh2-101_2021-08-24_23-49-21_QHY183MC__Mono_G16
Any ideas ?
Roger
RedCat51,QHYCCD183,Atik460EX,EQ6-R.Tri-Band OSC,BaaderSII1,25" 4.5nm,Ha3.5nm,Oiii3.5nm.

Carole

Needs zooming in to see it properly, very weird.

Carole

The Thing

Scope moved quickly at very end or beginning of exposure - its the stars trail. Other stars are too faint to produce a visible trail in the time.

Mac

Yup ,just the scope slewing and the exposure started before the scope stopped, zoom in and look at all the bright stars, they all have a faint line in the same direction, as for the main cygnus one, that just someone / something kicking / knocking the scope. probably right at then end when the exposure was just about to finish.

Mac.

ApophisAstros

#4
A. Nobody was out there as i image indoors.
B. why isnt the trail the same on each star and so long and convoluted on the one largest star.
c. possibly a gust of wind but why not in same direction.

Roger.
RedCat51,QHYCCD183,Atik460EX,EQ6-R.Tri-Band OSC,BaaderSII1,25" 4.5nm,Ha3.5nm,Oiii3.5nm.

Mac

Was this a guided image? my guess is yes,
Was it cloudy? Could have lost the guide star
Did an aircraft fly past and the guiding latch on to it? (Had that before especially if using a separate larger field guide scope).

ApophisAstros

Guided yes.
No cloud. didnt lose guide star. Use multistar guiding in PHD2.
An aircraft surely flies in a straightline not twisting and turning as in the sub.
Roger
RedCat51,QHYCCD183,Atik460EX,EQ6-R.Tri-Band OSC,BaaderSII1,25" 4.5nm,Ha3.5nm,Oiii3.5nm.