Another bird

multiweb (Marc) · #1 29-07-2013, 01:22 PM

This one is in season so I'll just chime in for one more.

Managed to do a bit over 1h Sunday night. I had planned to image Saturday night but it wasn't meant to be and I had to pack up around 10:00pm. One one those nights. Electrical problems, mount problems, focusing problems and general attitude problems. After some Deoxit from JayCar everything was more or less back on track.

Big(ger) one here.

This one is approx. 15x5min in Ha with the QHY9. I used my 90mm APO for it at 1800mm FL so x3. Unfortunately the AO didn't want to work either this time so I sort of guided. Lost a lot of subs and kept the best one so a little noisy still.

I got my week-end 'fix' but will revisit shortly with the new scope hopefully.

rustigsmed (Russell) · #2 29-07-2013, 03:05 PM

nice work marc,

glad to hear you got your system up and running after a few setbacks. i'm hoping to see first light on my "new" rig tomorrow / wednesday nights. I think i've been patient enough and would like to see something other than full moon or clouds....

just out of interest, how many more subs do you think you'll need to iron out the noise?

cheers,

Rusty

multiweb (Marc) · #3 29-07-2013, 03:48 PM

Quote:

Originally Posted by rustigsmed

nice work marc,

glad to hear you got your system up and running after a few setbacks. i'm hoping to see first light on my "new" rig tomorrow / wednesday nights. I think i've been patient enough and would like to see something other than full moon or clouds....

just out of interest, how many more subs do you think you'll need to iron out the noise?

cheers,

Rusty

Thanks Russel.

A lot. More than double the integration time. I'm at F/20 here which is ridiculous. It takes me 40s to have enough illumination to make a flatfield sub at approx. 8000ADU. I'm getting an 8" F/4 newt this week hopefully which will give me nearly the same field at F/8 and deeper at F/12 so I'm looking forward to that.

strongmanmike (Michael) · #4 29-07-2013, 06:04 PM

Hmmm? Stars look a little..

..soft..?

Nah, after what sounds like a painful night the end result is more than adequate to satisfy a hungry frog

Mike

multiweb (Marc) · #5 29-07-2013, 07:03 PM

Quote:

Originally Posted by strongmanmike

Hmmm? Stars look a little..

..soft..?

Nah, after what sounds like a painful night the end result is more than adequate to satisfy a hungry frog

Mike

I'll add some diffraction spikes for you.

IanP · #6 29-07-2013, 07:23 PM

Hungry frog, ha?

Very nice, Marc ..

Are you going to add some colour?

astronobob (Bob) · #7 29-07-2013, 07:25 PM

Good going Marc

Great you came up with that after such a time ! Dig the field of the crop also, Good stuff

Bassnut (Fred) · #8 29-07-2013, 08:14 PM

Excellent, very smooth and tight.

tilbrook@rbe.ne (Justin Tilbrook) · #9 29-07-2013, 08:35 PM

Good detail Marc!

Look forward to what you can do with your 8" f/4, I know I love mine!

Cheers,

Justin.

Ross G · #10 29-07-2013, 10:27 PM

Great looking closeup Marc.

You really know how to push your equipment!

Excellent, detailed photo.

Ross.

multiweb (Marc) · #11 30-07-2013, 07:45 AM

Quote:

Originally Posted by IanP

Hungry frog, ha?

Very nice, Marc ..

Are you going to add some colour?

Thanks Ian.

Due for a redo and yes I'd love to do a tricolor NB if I get some clear skies.

Quote:

Originally Posted by astronobob

Good going Marc

Great you came up with that after such a time ! Dig the field of the crop also, Good stuff

Thanks Rob.

Yeah I was pretty happy to get something after Saturday from hell.

Quote:

Originally Posted by Bassnut

Excellent, very smooth and tight.

Thanks Fred.

Tight enough for you? Probably not.

Quote:

Originally Posted by tilbrook@rbe.ne

Good detail Marc!

Look forward to what you can do with your 8" f/4, I know I love mine!

Cheers,

Justin.

Thanks Justin.

Yeah it's a waiting game now.

Quote:

Originally Posted by Ross G

Great looking closeup Marc.

You really know how to push your equipment!

Excellent, detailed photo.

Ross.

Thanks Ross.

Looking forward to do the same field with the much bigger scope. Can't wait any longer.

Elio · #12 30-07-2013, 07:40 PM

I think there's a mistake, not possible 90mm @ f20

Details are stunning

RobF (Rob) · #13 30-07-2013, 09:30 PM

Amazing detail from the little Apo Marc - amazing really. You must be using an off-axis guider?

multiweb (Marc) · #14 31-07-2013, 09:26 AM

Quote:

Originally Posted by Elio

I think there's a mistake, not possible 90mm @ f20

Details are stunning

Thanks Elio.

No mistake, just crazyness.

Training on imaging at longer FL so when I get the new scope it should be easier.

Quote:

Originally Posted by RobF

Amazing detail from the little Apo Marc - amazing really. You must be using an off-axis guider?

Thanks Rob.

Yes I used the OAG just behind the AO with a lodestar. The plan was to have the AO running in MAXIM like last time but it didn't work that night so I just guided with PHD behind the barlow. The lodestar is very good for finding guide stars in difficult or low light situations. I'm really glad I bought one. I wouldn't part from it. Never been in a situation yet where I couldn't find something to to guide on. And that's including guiding on chonky stars at the edge of the field because the pick up prism is always offset enough to be in a part of the imaging circle that is not fully corrected.