Pointers to Cat Paw in Ha 35mm field and Eridanus Bubble WIP

[multiweb (Marc)]

I did some Ha with a SMC Pentax-M 35mm since Friday trying to get some data on the Eridanus Bubble which turned out to be very hard to get from the burbs as it's so faint. I did nearly 5h on it so far and it's just starting to come out of the sky background. It's the first time I've been considering doing some Ha from a dark site.

Anyway I attached work in progress along with some widefield I completed around Ara. There are a lot of familiar nebulae, SN remnants and clusters in the field.

There are bigger versions below:

ARA widefield with a 1:1 version if you view the original
Plate solve is here. Again click 'view original' for 1:1.
Eridanus Bubble widefield - There is an old version of the barnard loop next to it for size reference (same FOV)

The 35mm is not a bad lens on axis. It has to be stepped down a fair bit though and there is still some residual coma. Can't complain for the price.

Thanks for looking and enjoy the views.

[tilbrook@rbe.ne (Justin Tilbrook)]

Nice images Marc!

The Ha produces so much fine detail, another area of imaging I would like to try.

Cheers,

Justin.

[peter_4059 (Peter)]

Nice work Marc. The Ha widefields are really striking.

[RickS (Rick)]

Very interesting to look at things on this scale, Marc. Helps put it all into perspective! What's the bandpass on your Ha filter? I found (with a narrower field of view) that a 3nm filter does a visibly better job in my light polluted skies than a 5nm.

Cheers,
Rick.

[multiweb (Marc)]

Originally Posted by tilbrook@rbe.ne

Nice images Marc!

The Ha produces so much fine detail, another area of imaging I would like to try.

Cheers,

Justin.

Thanks Justin. Ha imaging is great if like me you have light polluted skies.

Originally Posted by peter_4059

Nice work Marc. The Ha widefields are really striking.

Thanks Peter.

Originally Posted by RickS

Very interesting to look at things on this scale, Marc. Helps put it all into perspective! What's the bandpass on your Ha filter? I found (with a narrower field of view) that a 3nm filter does a visibly better job in my light polluted skies than a 5nm.

Cheers,
Rick.

Thanks Rick. My Ha filter is the 7nm 2" Baader. I believe only Astronomik or Astrodon have a 3nm version but the cost is a little prohibitive for me. I can't really justify spending $1k for a filter. I enjoy astro imaging but not that much.

[David Fitz-Henr]

I always like seeing these widefield images - a nice contrast to all the other deep sky images on IIS. Well done! It would be intersting to see a version of some of these ultra widefield shots with labels identifying the various objects contained therein.

[gregbradley]

You are doing great on these lens Ha shots.

Fantastic.

Greg.

[multiweb (Marc)]

Originally Posted by David Fitz-Henr

I always like seeing these widefield images - a nice contrast to all the other deep sky images on IIS. Well done! It would be intersting to see a version of some of these ultra widefield shots with labels identifying the various objects contained therein.

Thanks David. I'll do a plate solve and post a link.

Originally Posted by gregbradley

You are doing great on these lens Ha shots.

Fantastic.

Greg.

Thanks a lot mate.

[troypiggo (Troy)]

Love 'em. Didn't realise the proximity or 6188 to the Prawn until I saw this. Sure does put it in perspective.

[Larryp (Laurie)]

Very nice images, Marc!

[multiweb (Marc)]

Originally Posted by David Fitz-Henr

I always like seeing these widefield images - a nice contrast to all the other deep sky images on IIS. Well done! It would be intersting to see a version of some of these ultra widefield shots with labels identifying the various objects contained therein.

David, I did a platesolve here. Click on the 'view original' from the menu for a 1:1 version.

Originally Posted by troypiggo

Love 'em. Didn't realise the proximity or 6188 to the Prawn until I saw this. Sure does put it in perspective.

Thanks Troy. Yeah they're not that far apart. When you're imaging you can do NGC6188, the the Prawn, then the cat's paw area then Lagoon etc... They just follow up in line so if you slew and do a little each night you clock in the time on each one of them.

Originally Posted by Larryp

Very nice images, Marc!

Thanks mate.