Sagitarius Widefield

jjjnettie (Jeanette) · #1 14-09-2009, 03:58 PM

I took this on the 11th of this month.
Mount eq5
Canon 20d
Canon 50mm f1.8 lens @ f4
56 minutes of 2min subs @ ISO 800
ICNR Off
DSS
CS3

It's earmarked for a repro at a later date. I processed this one while tired.

AlexN · #2 14-09-2009, 04:07 PM

Wow Jeanette!

Thats awesome! The colours are fantastic... Love that dust lane in the upper right...

Great work!

leon · #3 14-09-2009, 04:13 PM

Hey JJJ, well done girl, that is very impressive indeed, well done.

Leon

multiweb (Marc) · #4 14-09-2009, 04:20 PM

Very nice indeed! Some pretty good details in there and great colors. Love it.

jjjnettie (Jeanette) · #5 14-09-2009, 04:27 PM

Thanks for looking, and for the kind comments.
I'd like to add more data to it. Eventually. I definitely need another dslr. One for taking wide fields while the other is shooting at prime focus. I know I could always use the Gstar for prime, but it's not the same now is it.

matt · #6 14-09-2009, 04:38 PM

That's nice jjj.

Why did you have ICNR off?

And sorry if this is a dopey question, but I've only recently headed down the DSO path - but would 56 minutes of 2 min exposures mean you used 28 exposures (lights) to achieve this image?

Cheers.

jjjnettie (Jeanette) · #7 14-09-2009, 04:53 PM

Sorry, I didn't mention it in my first post, but I took darks afterwards Matt. Only about 10x2min. But it's enough to do the job I think.

iceman (Mike) · #8 14-09-2009, 04:56 PM

Lovely work Jeanette.

Perhaps a little oversaturated on this screen, but the colours certainly are vibrant!

I took an image of the same area on Saturday night, with the 28mm f/2.8 lens - hopefully i'll start processing it tonight.

AlexN · #9 14-09-2009, 04:56 PM

Quote:

Originally Posted by jjjnettie

Thanks for looking, and for the kind comments.
I'd like to add more data to it. Eventually. I definitely need another dslr. One for taking wide fields while the other is shooting at prime focus. I know I could always use the Gstar for prime, but it's not the same now is it.

I agree, the Gstar does a good job, but its not in the same league as the DSLR.. If you could have the ED80 + DSLR on the EQ5 taking closer images with the other DSLR + 50mm F/1.8 on the cube or the tower you'd be able to crank out the images!

I really look forward to seeing M31 and M33 in one FOV.. that should be wild!

jjjnettie (Jeanette) · #10 14-09-2009, 04:57 PM

ICNR was turned off so I could collect as many subs as I could before the constellation got too low in the sky.
I lost about an hours worth of subs due to errors in tracking.

iceman (Mike) · #11 14-09-2009, 04:58 PM

I had a second DSLR (my 20D) on Saturday night which I was planning on using for star trails, but realised I only have one ball mount, and it was busy with the 350D piggyback on top of the ED80 - so I couldn't use it on the tripod!

doh!

jjjnettie (Jeanette) · #12 14-09-2009, 04:59 PM

Quote:

Originally Posted by AlexN

I really look forward to seeing M31 and M33 in one FOV.. that should be wild!

Shhh Alex, that's my secret mission for Barambah.

Gunna wow 'em with that one.

AlexN · #13 14-09-2009, 05:02 PM

oops

jjjnettie (Jeanette) · #14 14-09-2009, 05:06 PM

Quote:

Originally Posted by iceman

I had a second DSLR (my 20D) on Saturday night which I was planning on using for star trails, but realised I only have one ball mount, and it was busy with the 350D piggyback on top of the ED80 - so I couldn't use it on the tripod!

doh!

Tsk.... Life's just so hard at times, isn't it Mike.

renormalised (Carl) · #15 14-09-2009, 05:12 PM

Great piccie Jeanette

Big diff' between 8 bit mono and 12-16 bit colour. The DSLR will trump the Gstar all the time there. However, the Gstar will go a lot deeper

Oh BTW, Steve's been testing a colour version of the Gstar...should have the results soon.

jjjnettie (Jeanette) · #16 14-09-2009, 05:23 PM

I've been following that.
I should have offered to beta test for him eh.

renormalised (Carl) · #17 14-09-2009, 05:31 PM

Quote:

Originally Posted by jjjnettie

I've been following that.
I should have offered to beta test for him eh.

Why not...if I'd have known earlier I may have too. It'll probably be a 16bit camera. I hope so and with a bigger resolution probably. Doesn't have to be much larger, but a slightly bigger resolution would be good.

tlgerdes (Trevor) · #18 14-09-2009, 05:34 PM

Hi JJJ

I was tossing up myself whether to go that wide, but decided to try my luck (I mean tracking) with zooming in a little (90mm) on the M8/M20 region.

You did this one well, you are really mastering your 50mm.

DavidU (Dave) · #19 14-09-2009, 05:34 PM

Crazy shot J, a beaut for sure.
Keep selling those posters and get that camera.

jjjnettie (Jeanette) · #20 14-09-2009, 05:52 PM

I've just looked at this image on the desk top monitor, and I see what you mean about over saturation.
This is kind of what it looks like on my laptop. Minus the compression noise.