More modded 350D pics

[tornado33]

Hi all
my 2nd night since getting the Hutech camera was thankfully clear, though moonlit later. Though I intended to use the in camera noise reduction, it means doubling the exposure times due to the dark frame removal. This means waiting twice the time to find out if the pic is okay. So I turned it off and instead took a dark manually and tried using IRIS, this time simply using the "subtract a dark frame" command and ticking the optomise box in IRIS. It works a treat, doesnt even matter if the dark is a bit longer or shorter, as it optomises them to the light frame.
The Eta carina shot is 2x10 mins ISO 400, with UHCS filter.
The Cometary Globule 4 (CG4) shot is 2 x 5 mins ISO 400, no filter. Im very happy getting this shot as a total of 10 mins unfiltered from a light polluted site getting CG4 is most exciting

The amount of noise on the original images is very bad in the warm night, the effectiveness that IRIS removes it is astounding. I should be able to get a "dark library" of darks of several different lengths and ISOs and may never need to take any more darks after that

[tornado33]

I forgot to mention the Eta Carina shots were taken with the 3/4 full moon up! and the sky was fairly bright even before than when taking the CG4 shots
Scott

[h0ughy (David)]

Awesome Scotty Awesome! that dark blob, how do you do it mate, it is a faint "not even" fuzzie item. Now you are able to compare the two camras, toe mod 300d and your new 350dH, what do you think of the mods against each other since you have eta carnia to compare?

[Itchy]

Ahhaa haa!!

Scott is like a Kid in a lolly shop!!

Well Done Mate!

Cheers

[tornado33]

Thanks
I think both cameras are similar. I processed my eta car. image with IRIS, I did the one from the 300D with Photoshop CS as its raw extraction generates less noise, with the 350D Photoshop CS doesnt support it but CS2 does but CS2 generates more noise when extracting the raw images, so I use IRIS instead, hence the slightly different colours as IRIS doesnt do the auto white balance thing..
Im wondering if CG4 being a dark nebula also puts out IR light as it might be warmed by surrounding stars, as I had no filter al all on it.
Ive ordered a Baader IR/UV cut filter from Andrews Communications, they should get more in next week.
Scott

[Orion]

Nice Scott, were they taken tonight! I thought there was a storm heading your way plus there was a lot of cloud about.

[h0ughy (David)]

Originally Posted by Orion

Nice Scott, were they taken tonight! I thought there was a storm heading your way plus there was a lot of cloud about.

last night Eddie, didn't you see the photons disappearing over wallsend

[tornado33]

Thanks Eddie
Yes taken last night, I had a funny feeling Id better get out and grab the photons and sure enough tonight no good.
Theres a lot more photons up there Im after
Scott

[h0ughy (David)]

Scott you are going to have to show me how to use IRIS, ;-)