Another M27

[mickw]

Nice work Mark, certainly a worthwhile mod.

I wasn't expecting the difference to be quite so dramatic

[Fay]

Mark, that is really good. A very good improvement.

I tried to do NGC888 & the Veil. I have tried a couple of times, but have assumed, as the image is quite light & all over red, that the sky is too bright at the moment. Although a lot of red is expected in that area.

I was testing all evening to see how I could get a reasonable frame regarding lightness. Around 12.30, I tried out a 600 sec of NGC888. It was the darkest it had been, but very red all over.

Do you think I should alter the red component, even though I was in a very red area? Also, do you use Photoshop for processing? I am not sure how to use the levels & curves with  RGB all in the same frame.


Fay

[Fay]

Mark, I will sort myself out & put the image on the forum. I did various times during the evening, but feel for Ha I need the longer exposures.

[MarkS]

Fay,

What you are describing is exactly what I found last night - the background was quite red (even with a CLS filter) and all the stars were very red.  This is exactly what you expect to find with a modded camera.  This is why I scaled back the red channel using RGB balancing.  I don't use Photoshop (except on rare ocasions) but I'm sure there must be an equivalent way to re-adjust the balance of the  RGB channels.

Mark

[Fay]

I used a CLS filter as well. Earlier on I did some exposures with 0.8 FR, but decided to take it off.They were so light.

[Rocket Pooch]

Oh, I like the after.

Mark/Fay I HAVE A 2" FILTER I HAVE NOT USED YET (BAARDER UHC-S), YOU CAN BORROW IT... 


But you house is subject to repossession if you do not return the filter in original condition.


HINT!!!!!!!!!!!!!!!!!!!!!!!!!!

[MarkS]

The "after" image with slightly more sympathetic processing.  The bluish star right at the centre is more obvious now.

[Fay]

Mark, fantastic perfect image, camera mod obviously paid off.
Can't believe the time you were up, this morning!

[MarkS]

Thanks Fay, I'm pretty pleased with the result.

I'm looking forward to some images from your modded 350D ...

[Mike]

Nice one Mark.

[JohnP]

Mark - that does look good - once you get your guiding sorted it'll be excellent.... John

[Rick]

Today's APOD image makes an interesting comparison:

http://apod.nasa.gov/apod/ap080626.html

[MarkS]

That's a beautiful APOD image.  But he has an unfair advantage by using a robotic telecope in Hawaii !

[Ian]

does that mean you don't consider yours to be robotic?

Anyway, who needs Hawaiian skies? Take advantage of the sky glow to get shorter exposures. More time drinking beer

[Rocket Pooch]

I'm in wales next week, so you should have clear skies Tues/Wed