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SH 2-132 The Brussels Griffon Nebula

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#1 elmiko

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Posted 28 June 2022 - 09:23 AM

get.jpg?insecure

 

I imaged this object last year, but used my Refractor with the same camera. Could not quite fit in the whole Lion. Solution.... Samyang 135 mm Lens!

Everyone calls this the Lion, but I think it looks more like a Brussels Griffon. 😆👍


Edited by elmiko, 28 June 2022 - 09:24 AM.

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#2 Mert

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Posted 28 June 2022 - 11:27 AM

That's a beauty Mike, how do you focus that lens?
Manually?
Beautiful colors
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#3 elmiko

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Posted 28 June 2022 - 12:36 PM

That's a beauty Mike, how do you focus that lens?
Manually?
Beautiful colors

Thanks Mert! I manually focus using a Bahtinov Mask. I've got a ZWO EAF on backorder..



#4 Jeff Morgan

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Posted 28 June 2022 - 02:36 PM

Great looking image, I can see the dog (the colors really help with that).

 

I've noticed how much work you do with that lens. Looking at the calculator on astronomy.tools I got the impression it should not be done (undersampling).

 

However, everyone seems to be doing it (short lenses) and with great results.

 

And from a practical perspective, I don't see sensors with smaller pixels to "correct" the undersampling.

 

In the end Results Matter. Guess I will have to put something in the 135mm range on my shopping list!


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#5 elmiko

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Posted 28 June 2022 - 09:22 PM

Great looking image, I can see the dog (the colors really help with that).

 

I've noticed how much work you do with that lens. Looking at the calculator on astronomy.tools I got the impression it should not be done (undersampling).

 

However, everyone seems to be doing it (short lenses) and with great results.

 

And from a practical perspective, I don't see sensors with smaller pixels to "correct" the undersampling.

 

In the end Results Matter. Guess I will have to put something in the 135mm range on my shopping list!

Thanks for your input Jeff! I always Drizzle integrate with the data from this setup... It really helps with the blocky stars. I 2× Drizzle integrate it cuts the pixel scale in half.



#6 Look at the sky 101

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Posted 28 June 2022 - 09:34 PM

Magnificent image. 


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#7 elmiko

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Posted 28 June 2022 - 09:58 PM

Thanks so much Johann!



#8 Jim Thommes

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Posted 29 June 2022 - 02:11 PM

Cool image Mike.

 

I have heard from one of my buddies that a 1x drizzle can be very effective as well. He stated that it could be used with good effect on all OSC images - not just the under sampled ones. I have a 150 mm lens setup with a ASI1600 mono and filter wheel. I haven't seen blocky stars so I hadn't been drizzle integrating. May I should rethink this with the mono camera / FW setup??




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