Experimenting with HA filter on Eagle

Striker (Tony) · #1 04-06-2006, 09:03 AM

Taken with ED80/350D combo from Brisbane.

I went and purchased a elcheapo 70mm/900FL refractor so I could do some guided images.

Below is 15 x 10 minute guided exposures at ISO400

I am experimented with Red HA colour and just HA Monochrome.

Not sure if I like any of them to be honest...lol

1 false color..
1 in HA Monochrome
1 Color cropped and enlarged.

acropolite (Phil) · #2 04-06-2006, 09:13 AM

Nice work Tony, lots of detail there , I like the last one best.

h0ughy (David) · #3 04-06-2006, 09:39 AM

I like the monochrome one Tony!

Lester · #4 04-06-2006, 09:59 AM

Hi Tony,

It is not a colour I am used of seeing. I like the enlarged version.

Dennis · #5 04-06-2006, 11:12 AM

Nice one Tony, looks like H alpha is the go in light pollution. I might have to contact your personal suppliers, OPT!

Cheers

Dennis

matt · #6 04-06-2006, 11:19 AM

Good detail in the color cropped and enlarged

leon · #7 04-06-2006, 11:28 AM

hey Tony, nice shots, i hope to do that one day, i do like the monochrome best , really nice

Striker (Tony) · #8 04-06-2006, 12:49 PM

I'm sitting on the fence with this one.

Their all results from the same set of exposures..just processed differently.

I was hoping for more depth for the length and the number of exposures I took...total exposure time of 2.5 hours.

CoombellKid · #9 04-06-2006, 06:33 PM

They look great! Tony, I like the monochrome one the best, an enlarge
version of that would look fastastic. Reminds me of looking through
Peter Robins 30"er

regards,CS

Rob

tornado33 · #10 04-06-2006, 08:30 PM

Nice shot there. What type of Ha filter are you using? With the few Ha images Ive taken, after the dark subtraction and stacking, I remove the blue and green channels leaving only the red (as the other 2 channels would have little signal and same amount of noise). I wonder what shooting at a higher ISO will do with Ha imaging (with my un modded 300D I used to shoot at ISO 1600 with the Ha filter to get enough signal). I might try that again with the 350D if the darn weather ever clears here.
Scott

Striker (Tony) · #11 05-06-2006, 08:26 AM

Thanks Guys....I need to experiment more....I also agree Scott...I'm sure we can use a higher ISO with HA filters....I will try ISO 800 next.

I purchased the Baader 45NM...not the 7NM as they said the 45 would be more benificial for less sensative chips like DSLR...I dont know how true this is.
http://www.alpineastro.com/filters/filters.htm#H-Alpha

beren · #12 05-06-2006, 06:25 PM

Wow Tony , haven't got a clue about these filters but superb images , love the monochrome one

xelasnave · #13 05-06-2006, 07:14 PM

Good one

, I too have a similar set up but am a long way off producing such an excellent result. Nice work.

alex

Phil · #14 08-06-2006, 09:04 PM

Love the HA have you tryed OIII and SII and then mixing than to get a false colour image.
Phil

h0ughy (David) · #15 08-06-2006, 09:16 PM

Quote:

Originally Posted by Phil

Love the HA have you tryed OIII and SII and then mixing than to get a false colour image.
Phil

Just like the ESO images!

Striker (Tony) · #16 09-06-2006, 08:18 AM

Phil....I only have the UHC-S and H-Alpha 45nm filters but thanks to you their on my to buy list now.....lol

I will have to buy a filter wheel...can you get them to fit SCT's or somwhere within the imaging train.

tornado33 · #17 10-06-2006, 12:14 AM

Yes with O3 and SII you can go for the lovely "mapped colour" images, though total exposure times might run over most of a night for each object lol.
Scott