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Bortle 8 - Rosette. Just 0.7 hours. I like bright targets!

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#1 maxsid

maxsid

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Posted 13 February 2024 - 04:30 AM

Hello,

Terrible Bortle 8 here...

 

For the past several nights, I was shooting the area between Capella and Flaming Star - Sh2-224, Sh2-225, etc.

Those are very dim. In 9 hours with an ALP-T filter, I got something which was OK but not great.

 

Tonight, after I upgraded one of my imaging mini computers, I tested it on Rosette.

And in just 0.7 hours I got quite a reasonable result. Bortle 8!

Just before midnight, the clouds came in and they are going to stay for at least a week.

 

February 12, 2024. Bortle 8.

Rosette Nebula. NGC 2239.

 

FRA400 with a reducer at 280mm.

ASI2600 MC Pro. -5C and 100 gain. ALP-T filter.

RST-135 mount. Guided.

7x360s. 0.7 hours.

 

Stacked in APP.

Processed in PI.

 

Image43-sm.jpg


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#2 maxsid

maxsid

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Posted 14 February 2024 - 03:44 AM

This night, there was a completely unexpected cloudless window until 11pm.

So, I managed to collect some data with Askar D2 Sii/Oiii filter. For 1 hour...

 

In the end I had:

Ha from Antlia ALP-T 0.7 hours

Sii from Askar D2 1.1 hours

Oiii from Askar+Antlia 1.8 hours

 

I didn't like how SHO/HSO looked (this is my 2nd time dealing with S+H+O data).

So, I combined the channels with NBColourMapper:
Ha - deep red

Sii - lighter red

O  - blue

 

February 12-13, 2024. Bortle 8.

Rosette Nebula. NGC 2239.

 

FRA400 with a reducer at 280mm.

ASI2600 MC Pro. -5C and 100 gain.

 

ALP-T filter. 7x360s. 0.7 hours.

D2 filter.     11x360s. 1.1 hours.

 

RST-135 mount. Guided.

 

Stacked and narrow bands extracted in APP.

Processed in PI.

 

nbcm-Image199-sm.jpg


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