Rosette with ED80 and unmodded DSLR.

[tilbrook@rbe.ne]

Hi,
Thought it time to try the rosette neblua with the ED80. So many ways to process this, I decided to go for quite a bit of colour saturation and I'm happy with the depth of the image and pleased with the star colour This is a total of 96 minutes of data, could do with another 96 epecially in this warm weather with an unmodded DSLR.
I've also done an 80mm wide field for a bit of context.

Equipment.

Skywatcher ED80, orion mini guider, orion field flattener, HEQ pro 5 mount.
Unmodded canon 1100D, 8 minute subs at iso 800, total 96 minutes.
Same for 80mm wide field.
Darks, flats and bias frames applied.
Stacked in DSS and processed in PS7.

Cheers,

Justin.

[cometcatcher]

Are you sure that 100D is not modified? Lol. Would like to see what you could do with a 60Da. Great picture.

I suspect my Pentax actually has less red sensitivity at higher temperatures. I just can't image Ha during summer.

[Rigel003]

Great shot, Justin. I like the wide field too. Haven't seen that before and it does put it in context.

[tilbrook@rbe.ne]

Thanks Kevin!

Have you any images of the rosette?
I would like to see the difference in invidual subs.



Thanks Graeme!

It's nice have some conext, amazing how remote some of these DSO's look in wide field images.

Cheers,

Justin.

[jjjnettie]

Very rich Justin. :)

[cometcatcher]

It's probably not a good comparison since to get anything at all from it I have to use a Deep Sky filter. These were taken back in September before it got really hot. I found that adding subs after September actually made the final image worse.

The single frame is roughly 3 minutes at ISO 1600 and deep sky filter, the stack is about two hours worth through an ED80 at F5.5. As you can see, I need a better camera for Ha. It does alright for comets which are mostly greenish, but Ha is terrible.

[tilbrook@rbe.ne]

Thanks jjj!



Thanks Kevin!

Here's a single 8 minute sub iso 800, yours actually looks like it has more response in the red.

Cheers,

Justin.

[strongmanmike]

I can see you have had to deal with plenty of noise but hey, I like this Justin, great colours and I like the way it is kinda see-through, great job :thumbsup:

Mike

[cometcatcher]

That's probably the Deep Sky filter at work. I'll have to shoot it unfiltered some time.

[naskies]

Another superb effort with an unmodded DSLR, Justin! :thumbsup:



Kevin, just looking at your single sub vs Justin's, I can see that you have a much brighter sky background - hence lower nebulosity contrast. If you have a go imaging it from dark skies (where no filters are needed), I bet you'll find that your camera will work quite well :)

[alocky]

The star colours are superb, it's certainly an element I struggle with when using light pollution filters on the DSLR. Out of interest, to the left side of the wide angle field is the christmas tree cluster, and you can just see hints of the nebulosity that the cone and fox-fur are embedded in.
I accidently swung the scope onto this and took two 5 min subs before I realised I was on the wrong object last month. It's certainly interesting to compare the subs from the Nikon. this is 10 minutes worth - but calibrated and stretched via a basic pixinisght workflow.
cheers,
Andrew.

[Larryp]

Lovely, Justin!

[cometcatcher]

Yes that would help. A bit more elevation would help also. It's pretty low in September.

[tilbrook@rbe.ne]

Thanks Laurie!



Thanks Andrew!

Yes, light pollution and filters add another level of difficulty to imaging and processing. Even the baader fringe killer gives me odd backgrounds which I have to balance out.
I'm lucky I don't have to use LP filters .

[QUOTE=naskies;927567]Another superb effort with an unmodded DSLR, Justin! :thumbsup:

Thanks Dave!



Thanks Kevin!

Look forward to seeing more comparisons.

[David Fitz-Henr]

Some great colours in both the nebula and the stars Justin - quite outstanding from an unmodded DSLR!

[Forgey]

Lovely colours Justin.

[hotspur]

great work Justin,its a lot of hard work to get this object imaged,it looks great.:thumbsup:

[tilbrook@rbe.ne]

Thanks David!



Thanks Forgey!



Thanks Chris!

Yes, I must say it takes a lot of time to process the rosette. I think this one was the 15th attempt.

Cheers,

Justin.

[alexandre]

Nice colors Justin !

bye!
@lex;)

[tilbrook@rbe.ne]

Thanks Alex!

Cheers,

Justin.

[Ross G]

A great photo Justin.

Love the colours.

Ross.

[tilbrook@rbe.ne]

Thanks Ross!

Cheers,

Justin.