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#61
Astrophotography / The Cocoon Nebula (C19) LRGB
Last post by JohnH - Oct 07, 2024, 16:15:01
I am continuing my meander around the Caldwell Catalogue with C19.

This is an old fashioned LRGB image captured over two nights. Total capture time 2 hrs 38 mins with my Sharpstar 15028 HNT. Unfortunately, I think my neighbour's security light must have been going on and off leaving some strange colour data which I have done my best to remove.



I am hoping to get capture some Ha to enhance both the L and RGB.

Regards,

John
#62
Astrophotography / Re: C34 HaRGB
Last post by Carole - Oct 05, 2024, 10:26:37
Would be even better in HOO, those 5 position filter wheels are a damn nuisance. I know several people who are restricted by them. 
#63
Astrophotography / Re: C34 HaRGB
Last post by garrick - Oct 04, 2024, 23:48:03
Hi John,

The LRGB will be fine with a fast system as they are broad-spectrum filters. You may need to look at a fast filter for the Ha. Its looks like you are not getting a lot of transmission on the Ha. Maybe worth looking into.

Best wishes,

G

#64
Astrophotography / Re: C34 HaRGB
Last post by JohnH - Oct 04, 2024, 18:30:01
Hi Garrick,

"Nice image and as mentioned above well framed. Just wanted to find out if you are using fast filters as you are imaging at f2.8."

Thanks, I am just using standard ZWO L R G B and Ha. Probably not perfect for my setup but not, I hope, significant given the overall quality of the telescope.

Regards,

John
#65
Astrophotography / Re: C34 HaRGB
Last post by garrick - Oct 02, 2024, 12:33:17
Hi John,

Nice image and as mentioned above well framed. Just wanted to find out if you are using fast filters as you are imaging at f2.8.

Best wishes,

G
#66
Astrophotography / Re: More bright and dark from ...
Last post by garrick - Oct 02, 2024, 11:30:32
LBN 643, LDN 1355

Brilliant result. Looked at the Astrobin version, stars and detail are excellent. Extremely challenging to get results like this from Bortle 7 and 8.

G
#67
In the Media... / Earth's new mini-moon swings b...
Last post by Rick - Oct 01, 2024, 22:28:22
Earth's new mini-moon swings by, then ghosts us by late November

Everybody be on their best behavior: Earth has a visitor. 2024 PT5 is an asteroid that took up residence in orbit on Sunday to become a "mini-moon."

Alas, even if humanity could clean up our space junk, the asteroid would not be staying with us. It's lingering in the neighborhood until November 25, when the forces of gravity will coax it back into a heliocentric trajectory.

2024 PT5, which measures about ten meters across, was first spotted by the Asteroid Terrestrial-impact Last Alert System (ATLAS) on August 7 – not an overly reassuring time period for space objects that are about to thread the needle between Earth and the Moon.

More: https://www.theregister.com/2024/10/01/earth_minimoon_2024/
#68
In the Media... / Comet last seen in stone age t...
Last post by Rick - Oct 01, 2024, 22:24:10
Comet last seen in stone age to make closest approach to Earth

C/2023 A3 (Tsuchinshan–Atlas) was discovered last year and is thought to orbit the sun every 80,000 years.

A comet that has not been seen from Earth since Neanderthals were alive and kicking has reappeared in the sky, with astronomers saying it might be visible to the naked eye.

Comet C/2023 A3 (Tsuchinshan–Atlas) was discovered by astronomers early last year, and is thought to orbit the sun about every 80,000 years on a highly elongated path.

Dr Gregory Brown, the senior public astronomy officer at the Royal Observatory Greenwich, said the comet was thought to have originated in the Oort cloud, which lies beyond Neptune's orbit.

More: https://www.theguardian.com/science/2024/oct/01/comet-last-seen-in-stone-age-to-make-closest-approach-to-earth
#69
Astrophotography / Re: More bright and dark from ...
Last post by Roberto - Oct 01, 2024, 06:08:48
Carole

Thanks. Yes, there was a duplicate of one of the Ha images, I have now edited the post.

And yes, I believe the dark extended clouds are referred to as The Helping Hand. It is difficult to do it justice from London...

Roberto
#70
Astrophotography / Re: C34 HaRGB
Last post by Carole - Sep 30, 2024, 23:57:24
(The world's laziest astroimager)

Lol