Today's flat field failure - 4th August

[DrRobin]

Hi,

I am not sure what went wrong with my flats this morning, but as it was an early rushed session I didn't notice.  Even if I had there wasn't time to re-do the 12 pane Ha mosaic.  Coupled with a slight lack of time, the sun struggling to rise above the villa (I moved three times to follow a gap) and an almost flat battery on my lappy (needed a re-charge to do the Ha) it wasn't going my way this morning.

Ha, 12 pane disc, Quark, WO ZS80mm, 0.5x FR

The bright and dark patches are the result of a poor flat and repeat in nearly every frame.  I tried cropping it out of the panes, but it wouldn't stitch.

Still the fili-prom in the 2 o'clock position looks good

False colour

Over-exposed to see the prom

My Quark is not the best for proms and reckon this would have been spectacular from here with my Lunt 60.

To complete the picture a full disc CaK, fortunately this doesn't need flats.

So all in all a pleasing session, especially as it was crammed in to about 30 minutes.  Tomorrow will hopefully be better prepared, the lappy is going on charge now and I have given my scope, Quark and camera a good talking to about flat fields.

Robin

AS_p15_Multi_Drizzle15_Sun-Ha_040816_061041_prom-b.tif

[Davey-T]

Still much better than anything here today Robin, shouldn't get too stressed out about it on your hol's 

Dave

[uhb1966]

i wonder what the result would look like without the flats....

[laudropb]

Another nice set Robin.

[Pete Presland]

Great set of images,  despite the problems. 

[DrRobin]

2 hours ago, uhb1966 said:

i wonder what the result would look like without the flats....

Sadly I use firecapture and apply the flats in real time as the vids are taken, so no option to go back.  Oh well there is always tomorrow.

5 hours ago, Davey-T said:

Still much better than anything here today Robin, shouldn't get too stressed out about it on your hol's 

Dave

 Not stressed at all, the amount of solar imaging I have had in the last 10 days equals more than in the last 4 months. Plus we are somewhere warm with some really great tavernas, beats work and a wet and windy Newcastle most days of the year.

Just to make a point here is my obs weather graph

The blue line between 6pm and 7:30 shows heavy rain. Pity because up until 30 mins before it was bright sunshine.

Robin

[paulastro]

Still outstanding images Robin, despite the problem with your flats .

[David Smith]

Nice disks nonetheless Robin.