Sh2-240 in Ha

[tomato]

This is 16 x 10 mins with a SY135 at F2.8 with a Moravian G2-8300 CCD and 7nm Ha Baader filter. I am trying to collect some OIII to go with it but as well as the clouds the moon is again not far away and getting more intrusive.

In B&W this nebula always reminds me of those eerie 1950's ultra high speed photos of the A bomb tests. I suppose the processes that are captured in  these images are not too dissimilar, although the scale in terms of size and time are rather different.

 

 

Edited November 9, 2021 by tomato
correct image inserted

[tooth_dr]

That’s a pretty nice FOV for this one!  Can’t believe it’s another year again and this has come back round. 

[tomato]

I'm imaging it a bit early TBH, but wanted to try and have something to enter into the SNR/Planetary nebula challenge.

[Allinthehead]

Very nice, I've wanted to image this region for a quite a while. Envious of your FOV.

[megrez]

That's really good, I like that.

[tomato]

23 minutes ago, Allinthehead said:

Very nice, I've wanted to image this region for a quite a while. Envious of your FOV.

Thanks for the comment. This is indeed a big target, I’m trying to do a two panel  mosaic with the RASA8/268c but it really needs four to do it justice. 
 

I don’t usually do widefield, but I really like the Samyang lens, they are great value for money.

[ItsmeMaw]

Highspeed?

The tower is still there!!! What millisecond after boom was that?

 

[tomato]

The picture was taken about 0.001 seconds after the operator pressed the fire button, and the exposure is an incredible 10 nanoseconds in duration.  Have a look on here for more information:

 Ultra-Fast Nuclear Detonation Pictures (waynesthisandthat.com)

[MartinB]

Looking good.  Good luck with the OIII.  You will need very clear skies and a lot of time.  Looking forward to seeing the result