Antlia 3nm Ha First Light with Osc.

[Allinthehead]

I managed to pick up a second hand 3nm in the for sale section here. I know that 3nm is not ideal at F/3.3 but I was looking for a filter that would work well under moonlight.

First I wanted to check a bright star for haloes so I went for Alnitak. All looks good here I think.

After watching the Hoys Stargazine episode I wanted to make a contribution so I slewed to the Rosette Nebula. I had to shoot though gaps in the clouds but still managed to get 32 300 second subs.

Shot through an Epsilon 160 with an Asi 2600mc.

Gain 100.

Processed in APP, PS and PI.

Overall very happy with the filter and with how the colour camera has done with it.

Starless for fun.

Bayer Drizzle 

Edited February 8, 2021 by Allinthehead

[Allinthehead]

For anyone interested in contributing to the Hoys Citizen Science project here's the link. https://hoys.space/about/. Well worth watching the Stargazine episode too. 

 

[Sunshine]

Beautifully focused, exposed, processed, detailed images you've captured.

[michael.h.f.wilkinson]

Very nice images indeed

[Allinthehead]

2 hours ago, Sunshine said:

Beautifully focused, exposed, processed, detailed images you've captured.

 

2 hours ago, michael.h.f.wilkinson said:

Very nice images indeed

Thanks, much appreciated 

[Allinthehead]

Did another version with bayer drizzle integration, then just converted to greyscale. Seemed to produce sharper detail and a little more contrast. It will be interesting to compare this to the mono sensor when I get it.

[Craig123]

Great pictures and detail. Looks like a good choice  of filter after all. 😊

[Davey-T]

Great result Richard, bought a 2" one and Baader filter draw, forecast looking good for Wednesday ATM so hopefully get a chance to take a few subs.

Dave

[Allinthehead]

1 hour ago, Craig123 said:

Great pictures and detail. Looks like a good choice  of filter after all. 😊

Thanks Craig.

1 hour ago, Davey-T said:

Great result Richard, bought a 2" one and Baader filter draw, forecast looking good for Wednesday ATM so hopefully get a chance to take a few subs.

Dave

Thanks Dave, hope Wednesday holds up for you, looking pretty grim here for the week.

[peter shah]

a brilliant demonstration using narrow band filters with a OSC

[Allinthehead]

8 hours ago, peter shah said:

a brilliant demonstration using narrow band filters with a OSC

Thanks Peter, well worth the effort even with Osc