Crescent Nebula D5300a 12nm narrowband

1llusive said:

To think what you could do if given a bigger telescope...

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skynoob said:

Hello!

Here is my latest DSLR narrowband project taken a couple of weeks ago, after my Pelican shot. Taken over a course of two nights, 5 hours total for H-alpha but only 2.7 hours total for Oiii. Sky conditions were not so good for both channels, a light mist and weather just deteriorated after. Subs were 4.5 mins long at ISO1600 for both Ha & Oiii.

Ha response was ok as usual, but Oiii was quite weak on the surrounding nebulosity except on the crescent itself which showed at least some "oiii shell". By comparison the oiii response on the NA& Pelican were stronger.

On the top left corner is a bonus HII object called SH2-104 on the sharpless catalog. What is missing is the extremely faint soap bubble nebula just a few degrees away from the Crescent which is of course beyond the capability of my tiny 71mm scope and my city location doesn't help either.

D5300a+William Optics 71mm APO w/0.8x FF/FR on Skywatcher EQ-3 Synscan.

Integrated using AstroPixelProcessor using the Ha & Oiii algorithm for the output files. 20 Darks used and no flats. Lots of satellite trails on the subs but I choose "no rejection" setting on APP. All the subs by the way have sharp stars, the guiding did its job.

Color combined in photoshop using HaOiii bicolor process.

Now that snow is on the ground it will be quite a while before the old D5300 would see some starlight again.

Thanks for looking.

Click to expand...

Rutgerbus said:

Your images intrigue me so much that I'm about to buy the same setup you are using to create similar "STUNNING" results.

I'm not a newbe in astrophotography and I do posses a Meade LXD75 (which is a pain in the ass) and a Skywatcher Star Adventurer.

The latter i'm using most of the times with short 135mm, to medium 300mm telelenses, It's a miss and hit experience when using the 300mm and I really do miss a dedicated scope with proper 10:1 focussing nobs, and of-course a mount that can be guided in both axis (SA can only be guided in DEC).

BOY-OH-BOY

Can't wait to get myself such a rig, but saving always goes slow ;-)

Click to expand...

skynoob said:

Hello!

Here is my latest DSLR narrowband project taken a couple of weeks ago, after my Pelican shot. Taken over a course of two nights, 5 hours total for H-alpha but only 2.7 hours total for Oiii. Sky conditions were not so good for both channels, a light mist and weather just deteriorated after. Subs were 4.5 mins long at ISO1600 for both Ha & Oiii.

Ha response was ok as usual, but Oiii was quite weak on the surrounding nebulosity except on the crescent itself which showed at least some "oiii shell". By comparison the oiii response on the NA& Pelican were stronger.

On the top left corner is a bonus HII object called SH2-104 on the sharpless catalog. What is missing is the extremely faint soap bubble nebula just a few degrees away from the Crescent which is of course beyond the capability of my tiny 71mm scope and my city location doesn't help either.

D5300a+William Optics 71mm APO w/0.8x FF/FR on Skywatcher EQ-3 Synscan.

Integrated using AstroPixelProcessor using the Ha & Oiii algorithm for the output files. 20 Darks used and no flats. Lots of satellite trails on the subs but I choose "no rejection" setting on APP. All the subs by the way have sharp stars, the guiding did its job.

Color combined in photoshop using HaOiii bicolor process.

Now that snow is on the ground it will be quite a while before the old D5300 would see some starlight again.

Thanks for looking.

Click to expand...

swimswithtrout said:

1llusive said:

To think what you could do if given a bigger telescope...

Click to expand...

The challenges of using a "bigger" telescope go up more than exponentially. by every mm of additional focal length...

FWIW, this is just 10 min total using a Nikon D5300a/ Nikon 180mm lens of the same field from a dark site.

The Crescent is clearly visible as well as all of the surrounding nebula.No need for NB filters.

Click to expand...

1llusive said:

To think what you could do if given a bigger telescope...

Click to expand...

skynoob said:

swimswithtrout said:

1llusive said:

To think what you could do if given a bigger telescope...

Click to expand...

The challenges of using a "bigger" telescope go up more than exponentially. by every mm of additional focal length...

FWIW, this is just 10 min total using a Nikon D5300a/ Nikon 180mm lens of the same field from a dark site.

The Crescent is clearly visible as well as all of the surrounding nebula.No need for NB filters.

Click to expand...

Correct. Cygnus is fairly bright. Normal camera can even do it. No need for narrowband. Why spend hours and hours when one can do it in minutes

Click to expand...

RudyPohl said:

Fascinating!

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Astrophotographer 10 said:

skynoob said:

Hello!

Here is my latest DSLR narrowband project taken a couple of weeks ago, after my Pelican shot. Taken over a course of two nights, 5 hours total for H-alpha but only 2.7 hours total for Oiii. Sky conditions were not so good for both channels, a light mist and weather just deteriorated after. Subs were 4.5 mins long at ISO1600 for both Ha & Oiii.

Ha response was ok as usual, but Oiii was quite weak on the surrounding nebulosity except on the crescent itself which showed at least some "oiii shell". By comparison the oiii response on the NA& Pelican were stronger.

On the top left corner is a bonus HII object called SH2-104 on the sharpless catalog. What is missing is the extremely faint soap bubble nebula just a few degrees away from the Crescent which is of course beyond the capability of my tiny 71mm scope and my city location doesn't help either.

D5300a+William Optics 71mm APO w/0.8x FF/FR on Skywatcher EQ-3 Synscan.

Integrated using AstroPixelProcessor using the Ha & Oiii algorithm for the output files. 20 Darks used and no flats. Lots of satellite trails on the subs but I choose "no rejection" setting on APP. All the subs by the way have sharp stars, the guiding did its job.

Color combined in photoshop using HaOiii bicolor process.

Now that snow is on the ground it will be quite a while before the old D5300 would see some starlight again.

Thanks for looking.

Click to expand...

A lovely shot.

Greg.

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Michael S. said:

Good Morning!

Hehe....the Crescent in a sea of Halpha, very good. Great details and lots of hydrogen.

best regards,

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Rutgerbus said:

Your images intrigue me so much that I'm about to buy the same setup you are using to create similar "STUNNING" results.

I'm not a newbe in astrophotography and I do posses a Meade LXD75 (which is a pain in the ass) and a Skywatcher Star Adventurer.

The latter i'm using most of the times with short 135mm, to medium 300mm telelenses, It's a miss and hit experience when using the 300mm and I really do miss a dedicated scope with proper 10:1 focussing nobs, and of-course a mount that can be guided in both axis (SA can only be guided in DEC).

BOY-OH-BOY

Can't wait to get myself such a rig, but saving always goes slow ;-)

Click to expand...

Sir Canon said:

skynoob said:

Hello!

Here is my latest DSLR narrowband project taken a couple of weeks ago, after my Pelican shot. Taken over a course of two nights, 5 hours total for H-alpha but only 2.7 hours total for Oiii. Sky conditions were not so good for both channels, a light mist and weather just deteriorated after. Subs were 4.5 mins long at ISO1600 for both Ha & Oiii.

Ha response was ok as usual, but Oiii was quite weak on the surrounding nebulosity except on the crescent itself which showed at least some "oiii shell". By comparison the oiii response on the NA& Pelican were stronger.

On the top left corner is a bonus HII object called SH2-104 on the sharpless catalog. What is missing is the extremely faint soap bubble nebula just a few degrees away from the Crescent which is of course beyond the capability of my tiny 71mm scope and my city location doesn't help either.

D5300a+William Optics 71mm APO w/0.8x FF/FR on Skywatcher EQ-3 Synscan.

Integrated using AstroPixelProcessor using the Ha & Oiii algorithm for the output files. 20 Darks used and no flats. Lots of satellite trails on the subs but I choose "no rejection" setting on APP. All the subs by the way have sharp stars, the guiding did its job.

Color combined in photoshop using HaOiii bicolor process.

Now that snow is on the ground it will be quite a while before the old D5300 would see some starlight again.

Thanks for looking.

Click to expand...

this is with a color camera and its amazing. better than a lot of the mono ccd stuff ive seen

--
I tend to overdo things

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skynoob said:

Sir Canon said:

this is with a color camera and its amazing. better than a lot of the mono ccd stuff ive seen

Click to expand...

Thanks Sir Canon. The d5300 proved itself to be a very capable astro dslr. Im practicing my processing for a real mono cam in the future. Regards

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