IC1396 under a full(ish) Moon - 200pds

[Uranium235]

Well, it might have been clear earlier this week but the sky certainly wasnt good quality. Loads of thin, high cloud illiminated by a full(ish) Moon.... not the best of conditions but hey ho... worth a try!

In the end I managed to cobble together just short of four hours worth in Ha, and to give it some colour I dug up some Ha/SII/OIII data I took a few years ago when I had the Atik314. I mean... if ive already got the data, and it rescales well enough to match the 200pds data... why reshoot?

This time I put the mono and colour images together in a single frame, just as a side by side comparison. I think the 200 needs a little more tweaking in one corner, but I had a fairly good collimation session a couple of nights ago so Im hoping that will fix it - all I need is a clear night to test it (ha, yea right!)

 

15x900 (Ha) + Ha/SII/OII from years ago.

Thanks for looking

 

 

[wimvb]

35 minutes ago, Uranium235 said:

 

Thanks for looking

 

 

Thanks for showing. I'm so clouded in, I can't even tell if there's a moon or not.

Days are sunny and bright, but when evening comes, clouds roll in.

So it's nice to see your image.

[tehmac]

Hi Uranium,

Fantastic looking image. Hoping to catch something like that soon with my 200PDS when the better astronomy months kick in.

Quick question: you said you used some shots from several years ago. I would have thought that gases etc would have changed/distorted some over that time period (or do Nebulae never seem to change?) Apologies if this is a very newbie question!

Thanks,
Gary

[Uranium235]

2 hours ago, tehmac said:

Hi Uranium,

Fantastic looking image. Hoping to catch something like that soon with my 200PDS when the better astronomy months kick in.

Quick question: you said you used some shots from several years ago. I would have thought that gases etc would have changed/distorted some over that time period (or do Nebulae never seem to change?) Apologies if this is a very newbie question!

Thanks,
Gary

The other data I used was about four years old, but in relation to your question - the structure/gas involved would not change over such a short period. In fact it would take a very long time for any changes to happen (hundreds, maybe thousands of years) - and even then the changes would be small. The only changes that seem to happen over an (astronomically) short period of time are those related with novae/supernovae and planetary nebulas where the gas shockwave is travelling at considerable speed.

Here is a recent example:

http://www.bbc.co.uk/news/science-environment-37098317

Or this one of the Crab nebula taken by the Chandra x-ray telescope:

 

[PatrickGilliland]

Taking shape nicely Rob, interesting to see close up.

Why reshoot indeed - if you can reuse then a good approach under UK skies.  May not be 100% accurate in terms of gas distribution but beats no image at all!

 

Paddy

[al-alami]

that's absolutely gorgeous 

[Barry-Wilson]

Excellent Rob and re-use of data is as valid as contemporary collection .

I never tire of the IC1396 it's such an extraordinary photogenic target and this rendition with its golden yellow is lovely.

[toxic]

great shot rob and great idear