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Fireworks Galaxy NGC6946



 
 
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  #1  
Old August 2nd 17, 07:30 PM posted to sci.astro.amateur
Razzmatazz
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Posts: 265
Default Fireworks Galaxy NGC6946

The Fireworks galaxy is a nice tight spiral, now overhead in Cygnus. A Supernova was discovered back in May:
http://www.skyandtelescope.com/astro...laxy-ngc-6946/

In my image taken last night the star is still very bright and prominent in the spiral arms of this pretty galaxy.
https://www.astromart.com/common/ima...3.jpg&caption=

The star would probably be visible in a 4inch or larger telescope.

Razzy
  #2  
Old August 2nd 17, 08:17 PM posted to sci.astro.amateur
Gary Harnagel
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Default Fireworks Galaxy NGC6946

On Wednesday, August 2, 2017 at 12:30:48 PM UTC-6, Razzmatazz wrote:

The Fireworks galaxy is a nice tight spiral, now overhead in Cygnus. A
Supernova was discovered back in May:
http://www.skyandtelescope.com/astro...laxy-ngc-6946/

In my image taken last night the star is still very bright and prominent
in the spiral arms of this pretty galaxy.
https://www.astromart.com/common/ima...3.jpg&caption=

The star would probably be visible in a 4inch or larger telescope.

Razzy


Nice!
  #3  
Old August 2nd 17, 11:17 PM posted to sci.astro.amateur
StarDust
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Posts: 732
Default Fireworks Galaxy NGC6946

On Wednesday, August 2, 2017 at 11:30:48 AM UTC-7, Razzmatazz wrote:
The Fireworks galaxy is a nice tight spiral, now overhead in Cygnus. A Supernova was discovered back in May:
http://www.skyandtelescope.com/astro...laxy-ngc-6946/

In my image taken last night the star is still very bright and prominent in the spiral arms of this pretty galaxy.
https://www.astromart.com/common/ima...3.jpg&caption=

The star would probably be visible in a 4inch or larger telescope.

Razzy


Nice!
Are you using some wires in the FOV, so bright stars look like crosses?
  #4  
Old August 3rd 17, 03:41 AM posted to sci.astro.amateur
Razzmatazz
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Posts: 265
Default Fireworks Galaxy NGC6946

On Wednesday, August 2, 2017 at 5:17:37 PM UTC-5, StarDust wrote:
On Wednesday, August 2, 2017 at 11:30:48 AM UTC-7, Razzmatazz wrote:
The Fireworks galaxy is a nice tight spiral, now overhead in Cygnus. A Supernova was discovered back in May:
http://www.skyandtelescope.com/astro...laxy-ngc-6946/

In my image taken last night the star is still very bright and prominent in the spiral arms of this pretty galaxy.
https://www.astromart.com/common/ima...3.jpg&caption=

The star would probably be visible in a 4inch or larger telescope.

Razzy


Nice!
Are you using some wires in the FOV, so bright stars look like crosses?


They are caused by the spider vanes that hold the secondary mirror support. Pretty much all mirror scopes have this artifact.

Razzy
  #5  
Old August 3rd 17, 04:26 AM posted to sci.astro.amateur
StarDust
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Posts: 732
Default Fireworks Galaxy NGC6946

On Wednesday, August 2, 2017 at 7:41:13 PM UTC-7, Razzmatazz wrote:
On Wednesday, August 2, 2017 at 5:17:37 PM UTC-5, StarDust wrote:
On Wednesday, August 2, 2017 at 11:30:48 AM UTC-7, Razzmatazz wrote:
The Fireworks galaxy is a nice tight spiral, now overhead in Cygnus. A Supernova was discovered back in May:
http://www.skyandtelescope.com/astro...laxy-ngc-6946/

In my image taken last night the star is still very bright and prominent in the spiral arms of this pretty galaxy.
https://www.astromart.com/common/ima...3.jpg&caption=

The star would probably be visible in a 4inch or larger telescope.

Razzy


Nice!
Are you using some wires in the FOV, so bright stars look like crosses?


They are caused by the spider vanes that hold the secondary mirror support. Pretty much all mirror scopes have this artifact.

Razzy


Not SCT's!?
Maybe Newt's or other exotic type telescopes.
Just asking, 'cause way back I was reading about astro photography, where it was talked about introducing wires into the FOV, which make bright stars look like crosses.
Sort of an enhancement, makes the stars look pretty.
  #6  
Old August 3rd 17, 06:14 AM posted to sci.astro.amateur
Quadibloc
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Posts: 7,018
Default Fireworks Galaxy NGC6946

On Wednesday, August 2, 2017 at 9:26:30 PM UTC-6, StarDust wrote:
On Wednesday, August 2, 2017 at 7:41:13 PM UTC-7, Razzmatazz wrote:


They are caused by the spider vanes that hold the secondary mirror support.
Pretty much all mirror scopes have this artifact.


Not SCT's!?
Maybe Newt's or other exotic type telescopes.


Well, perhaps by "mirror scopes" he meant purely catoptric telescopes rather
than catadioptric ones like Schmidt-Cassegrain telescopes. And, of course,
Newtonian telescopes are hardly exotic, they used to be just about the standard
of the hobby.

And for faint fuzzies, Dobsonians, a form of Newtonian, are still the most
common kind.

John Savard
 




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