Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Video and Electronically Assisted Astronomy

Pages: 1
Puck Ja
professor emeritus
*****

Reged: 11/21/12

Loc: OK, USA
Lodestar_C stacking trials new
      #6044559 - 08/25/13 01:45 AM

The moon was still full and bright. And I am waiting for Orion Skyglow filter to come. So I decided to try out some stacking with 60 second subs.

M51 with F/3 4x60s no filter:

m51_dk_mdx2_cf_str2_stack4_STool

M27 16x60s

m27_cc_cf_lev60_midx2_str2_gr_stack16_PP

The bright DSOs turn out to be OK, but the more diffusive DSO definite needs longer subs to show. The SNR for M51 was increased and the "side halo" of M57 was more apparent after stacking. But the improvement wasn't day & night.

On the other hand, for nebula, the stack may help a lot. That will be my next trials.

Edited by Puck Ja (08/25/13 03:01 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
highfnum
Carpal Tunnel
*****

Reged: 09/06/06

Loc: NE USA
Re: Lodestar_C stacking trials new [Re: Puck Ja]
      #6044703 - 08/25/13 05:47 AM

M51 has lots of detail

Post Extras: Print Post   Remind Me!   Notify Moderator  
Dragon Man
Carpal Tunnel
*****

Reged: 03/07/06

Loc: Snake Valley, Australia
Re: Lodestar_C stacking trials new [Re: highfnum]
      #6044891 - 08/25/13 10:07 AM

Puck, are these stacked in an on-the-fly software program prior to viewing the result as an enhanced near-live view, or are the 60 subs individually captured and viewed then saved then stacked, then viewed again?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Moromete
professor emeritus


Reged: 02/15/12

Loc: Romania
Re: Lodestar_C stacking trials new [Re: Dragon Man]
      #6044950 - 08/25/13 10:44 AM

Nice images Puck!

Off topic: have you managed to self-guide the LodestarC with SX M7C software?
I had no luck with self guiding even if tried Meade LX200 setting to guide through the Nexstar hand controller port.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Lodestar_C stacking trials new [Re: Moromete]
      #6045012 - 08/25/13 11:26 AM

The Celestron HC won't respond to LX200 commands, it would have to be the Celestron/NexStar protocol for pulse guiding via that serial port.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Puck Ja
professor emeritus
*****

Reged: 11/21/12

Loc: OK, USA
Re: Lodestar_C stacking trials new [Re: Dragon Man]
      #6045354 - 08/25/13 02:49 PM

Quote:

Puck, are these stacked in an on-the-fly software program prior to viewing the result as an enhanced near-live view, or are the 60 subs individually captured and viewed then saved then stacked, then viewed again?




This is only a trial. I am still trying to appreciate any benefit that may come from stacking, which was kind of being proven in this trial. Even 4 subframe stacking was quite beneficial.

I had high hope on M57 stacking but the result was less impressive than what I hoped for. I think my focus needs to be refined since i was trying to avoid making the focusing mask. Now it is probably due.

So these results are stacked afterward. Not the on-the-fly stacking by DSS. I kind of figuring out what was essentially needed for Lodestar_C. The next step was to figure out how to prepare the images on-the-fly before sending to the DSS.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Puck Ja
professor emeritus
*****

Reged: 11/21/12

Loc: OK, USA
Re: Lodestar_C stacking trials new [Re: Moromete]
      #6045373 - 08/25/13 02:58 PM

Thanks to all the encouragement.

Quote:


Off topic: have you managed to self-guide the LodestarC with SX M7C software?




I kind of giving up on that. Even we might make it work since it did work. I would hate to lose 1/2 integration time on the object. Also, I am using Orion SSAG for guiding and more importantly as a digital finder. The wide field from SSAG helps me to center on object much faster, since I am still doing only 2-star alignment which was not terribly accurate.

But I do had EQMOD and Astrototillas in mind for much better goto accuracy.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Lodestar_C stacking trials new [Re: Puck Ja]
      #6045389 - 08/25/13 03:11 PM

Quote:

Thanks to all the encouragement.

Quote:


Off topic: have you managed to self-guide the LodestarC with SX M7C software?




I kind of giving up on that. Even we might make it work since it did work. I would hate to lose 1/2 integration time on the object.



ISn't the software using a long integration for the image , followed by a shorter integration for guiding? At least that's how it used to work once upon a time . So you'd give up 5-10% not half of the integration time , which would be a more reasonable trade-off.


Post Extras: Print Post   Remind Me!   Notify Moderator  
jchaller
Pooh-Bah


Reged: 05/29/08

Loc: Tenino, WA.
Re: Lodestar_C stacking trials new [Re: mattflastro]
      #6046271 - 08/26/13 12:35 AM

Always impressed by that camera, love to see some live stacking done.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Moromete
professor emeritus


Reged: 02/15/12

Loc: Romania
Re: Lodestar_C stacking trials new [Re: mattflastro]
      #6046374 - 08/26/13 03:44 AM

Quote:

Quote:

Thanks to all the encouragement.

Quote:


Off topic: have you managed to self-guide the LodestarC with SX M7C software?





I kind of giving up on that. Even we might make it work since it did work. I would hate to lose 1/2 integration time on the object.



ISn't the software using a long integration for the image , followed by a shorter integration for guiding? At least that's how it used to work once upon a time . So you'd give up 5-10% not half of the integration time , which would be a more reasonable trade-off.




Matt, according to SX manual I've understood that the integration time will double when self-guiding.

Puck, I gave up too after trying different settings and I saw the same window with the same error.
Maybe it's impossible to self-guide the LodestarC without the actual STAR2000 control box.
As a side note, I've used the default guide settings with SX M7C software.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Puck Ja
professor emeritus
*****

Reged: 11/21/12

Loc: OK, USA
Re: Lodestar_C stacking trials new [Re: Moromete]
      #6047939 - 08/26/13 11:16 PM

To follow up, I had a chance to take some more 120sec subframe of M51. The 4-frame stacking was quite nice.

And I was very impressed with the StarTools result:

m51_dk_md_cf_str4_dk_stack4_STools


Post Extras: Print Post   Remind Me!   Notify Moderator  
Moromete
professor emeritus


Reged: 02/15/12

Loc: Romania
Re: Lodestar_C stacking trials [Re: Puck Ja]
      #6048005 - 08/27/13 12:08 AM

Again, nice image!

Yes, StarTools seems interesting.

Have you been guiding?


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
4 registered and 10 anonymous users are browsing this forum.

Moderator:  csa/montana, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 492

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics