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pyrasanth

M27- lets see your pictures.

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No pictures yet with the new RASA- Sorry!

But.....post your images of this amazing target. I want to review your collection & get ideas for the M27 imaging project which I will begin this season. Remember last year I asked you to post your images of M1....some fine examples were posted...please do the same for M27...historic & ongoing.

Clear skies to you all

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very much a work in progress every time im up late enough the blooming clouds role in i bet im not the only one.

post-12098-0-70589100-1432138786_thumb.j

:smiley:

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Here's mine from last year, still very much at the foot of the learning curve

post-3064-0-60880900-1432149390_thumb.pn

Narrow Band, HOO.

Megrez 90 Hotech flattener, Baader NB filters, Trius 694.

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Taken with Yves Van den Broek. LRGB, plus Ha blended to red and O111 blended to green and blue. Around 20 hours. 14 inch Dall Kirkham, Mesu Mount 200 and full frame CCD.

Olly

M27_HaO111RGBWEB-XL.jpg

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Oh, alright then...  This is from 2013, about two hours of RGB with a 127 Mak.  At one point I was quite happy with it.  Now I've started wearing glasses I'm not at all happy with it :(

m27-2013-08-31.png

James

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Deep one from Freddie there!  :icon_salut:

So here's the question, is it red and blue or red and green?? Probably because it was red and blue in the first images I saw of M27 that's how I tend to like it and that's what I get using my routine colour balancing procedure. However, this is hardly a proof! I associate red and green with Ha-O111 renditions and maybe DSLRs tend to give that with their double dose of green filters?

What do you folks prefer/think accurate?

Olly

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Dear Olly & Freddie,

Respect.

Ur image makes me want 2 quit astroimaging.

Feel like standing at the very beginning of the learning curve and gaping into the night sky.

Here is a DSLR image witha 60 mm scope. dont know why its more red and green.

CS

Rush

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Deep one from Freddie there!  :icon_salut:

So here's the question, is it red and blue or red and green?? Probably because it was red and blue in the first images I saw of M27 that's how I tend to like it and that's what I get using my routine colour balancing procedure. However, this is hardly a proof! I associate red and green with Ha-O111 renditions and maybe DSLRs tend to give that with their double dose of green filters?

What do you folks prefer/think accurate?

Olly

I'm undecided on that- hence my turquoise rendition.

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i think it should be red and teal  :grin: but then i think its in the eyes of the beholder what ever is pleasing.

some very good images its nice to see the different styles as well.

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I'm undecided on that- hence my turquoise rendition.

The OIII emission lines (495 & 500nm) fall somewhere in between green & blue so a turquoise hue might actually be the correct colour anyway?

Narrowband%20Diagram.jpg

Edited by laser_jock99
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Fantastic pictures. On the subject of green according to the site where I downloaded HLVG it states that there are no green astronomical objects- green is seen as noise pollution & should be removed. I'm not sure how true this is as I like green- just not as a cast all over my M13 picture!

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Most of us have seen the traditional out of the box M27 picture. I'm interested in capturing the faint outer shells & indeed some of you in these pictures have successfully captured this.

Now for my challenge & I really don't know if it is possible from my light polluted location is to capture the faint outer shells of the nebula. I have a fast astrograph. I'm not sure if the faint shell is RGB or narrow band data- let me know those who have captured it. I have a filter slide for the RASA with fast Baader narrow band filters good down to F2. This forces me to go with my Atik 460 mono camera (heaven forbid) I could try, when the sky gets darker, sets of 50-100 subs in each narrow band filter. I'm not sure if standard LRGB filters will behave at F2.2 but I can give them a try as well to obtain the full spectrum of data.

The RASA is also fitted with the official "cost an arm & leg" Celestron Astrodon light pollution filter but I still get heavy gradients which can be removed but it's another pain that might get better when the sky gets darker.

Keep your pictures coming. My mount is having a stability upgrade in the next few days. I'm going for Parallax rings mounted to the versa plate. I've just installed a sky watcher 80 mm refractor to use as a guide scope and this has the Lodestar X2 firmly screwed to the end with a C-mount adapter (must better than using the X2 in an eyepiece holder)

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Gona have another bash tonight if the weather holds out with the William optics.........

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i have started to get some of the outer shell of M27 and M57  and i have a white street nearly over the top of my Shedservatory, and 4 others surrounding my garden and i live at  the south end of a large town (thankfully not in the middle) but LP is still quite bad.

i do get severe gradients due to the LP even with oiii and lrgb but not with HA so there is hope no matter where you live.

post-12098-0-84893300-1432220163_thumb.j

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