Markarians Chain... Just a short stack taster

[Psychobilly]

Still a very shallow stack of just 6x450s subs but thought it might be an idea to give an idea of the framing...

And the same from The Sky6...

Hoping to get at least 5-6 hours on this tonight...

Here's the Astrometry Solution for the image....

more info here...

Peter...

[George]

Lots going on there Peter...looking very good

[NickH]

Fantastic

[Psychobilly]

Still going - which is more than can be said for me... How did I used to be able to stay awake night after night with hardly any sleep ?

I don't like the star shapes in the corners though

Guiding has been OSC Index 0.47 and RMS 0.46 over the duration of the capture ...

Anyway... 3 hours in and stacked so far so here's a BnW Inverted image to go Fuzzy Hunting...

Quarter Scale....

Or...

Half Scale 1.1MB

Full Scale 6.8MB

I really should look at tweaking the spacing of the FF III

I'm trying to resist the draw of my Favourite Constellation which is Riising magnificently at the moment ... Hello old friend...

Peter...

[Ibbo!]

Would that be a bird of the water variety, white in colour, yellowish beak ( my mate hates em and they hate him) ??

I've just noticed there is a scorpion on the rise with a glow ball in it

either summer is here or its been a long night

[Psychobilly]

The one teaming with lovely red stuff... thats the one... Managed to stay on target tonight to get 44x450s for 5.5 hours although I might drop the last few frames as they are a bit light...

Just closed up the obs roof and grabbed 40 flats and 40 dark flats to add into the mix...

So makes over 400 "frames" for DSS to get its teeth into for the Monkey Head Nebula...

Peter...

[NickH]

That's a high osc and rms Peter

I had 0.26 and 0.17 last night with IC410

Still...fantastic result you have..

[Psychobilly]

That's a high osc and rms Peter

I had 0.26 and 0.17 last night with IC410

Still...fantastic result you have..

Cheers Nick... The "final" images are in another thread...

IIRC I read somewhere that an OSC of 0.5 was ideal.. Please Post your PHD Graph and Settings - IceInSpace

to me it goes against some of my ideas on classical control theory and in the past I have adjusted the PHD settings to get a lot lower OSC and smoother graphs......

In terms of the RMS..

The 500m f8 DSI IIC combo is giving about 3.48 arc sec per pixel

So that gives RMS guiding error of 1.6 arcsec?

The Canon 1000D on the Megrez72 with the FFIII is about 3.34 arc sec per pixel...

SO getting around 0.48 pixel variation on the 1000D

Thats if my understanding of the maths is correct...

This is from my heavily overloaded poorly PA'd CPC800.. whose Fork mount has to put up with all the abuse that I give it...

Peter...

[mike.brightmore]

That is a beautiful image. It really captures the depth of the chain trailing off into the Cosmos. A few more subs and you could call it the 'Psychobilly Ultra Deep Field'. Keep abusing your fork mount - it's obviously responding.

[Psychobilly]

Thansk Mike ...

I have been playing galaxy detective usign the deeper final image.....

http://stargazerslounge.com/imaging-deep-sky/98883-markarians-chain-5h30m-44x450s.html

Peter...

[Tim]

I wondered when we'd start to see this. great work Peter, really like the inverted view for showing them up.

[Psychobilly]

It's better in the other thread...