Stub Mandrel

16 hours ago, Gina said:

This thread will return to imaging.

13 hours ago, Gina said:

imaging... gutters 🙂

Across the web there are multiple solvent options for Sony sensors including acetone and MEK.

The Canon ones are epoxy based and the most you can expect to achieve is softening of the matrix..

After 102 pages is there any consensus on the safest approach to Canon debayering? I might have a go with my 1000D

21 hours ago, Piero said:

Here's another one  

Lovely flamed veneer! Far too good for a scope...

21 hours ago, Gina said:

I worked on remote control systems in my career (amongst other things).  Technology was very different then though.  (60's & 70's)

🙂

Sorry Gina...

On 13/07/2019 at 20:35, JOC said:

Is the orange a protest against the dominance of green  accessories 🙂

Eclipse watching last night, using the C90 Mak.

Couple of mine from last night.

Not long after the moon came up:

Max eclipse:

Would a symptom of this be the system behaving as if it's low on memory when stacking files?

I suspect it eliminates atmospheric dispersion by creating a narrowband image, giving a sharper result.

Well that was nice, got a good hours worth of imaging and some nice views of moon and Jupiter including with my vintage Tasco.

Rosliston right now

16 hours ago, Startinez said:

Any feedback would be appreciated.

Great start!

The yellow top and greeny blue bottom is caused by 'atmospheric dispersion' - the atmosphere acts like a prism when things are low down. You can get rid of this with an 'atmospheric dispersion corrector', unfortunately they are a bit pricey..

A very small M27, because I used the 130PDS, plus using super pixel mode halves the resolution. Only about 50 minutes of DSLR Ha.

Ha image alone, and combined with a colour version from 2016.

1 hour ago, GlenM said:

Have you seen the price of 5litres of paraffin😀

 

Glen.

 

If you are that tight, just rub a candle on the blade. 🙂

This one has really responded well to 3x drizzle. Lots more detail. The png is to big to load, so here's a jpg (sadly loses some of the detail gained!):

Why image the moon in Ha?

Because my scope was set up and focused but it wasn't dark enough to start guiding reliably.

I Used PIPP to isolate the red channel as a mono image from about 100 subs and stacked the best 70%.

There's an awful lot of complaints on Twitter.

Now the Sky at Night programme is unwatchable, iplayer keeps freezing - far more gap than content GRRR!

They have probably decided no-one wants to watch it and have throttled the bandwidth...

I've put a formal complaint in using their awful online form. Make sure you choose 'television' not iPlayer as otherwise it will make you start again from the beginning. >fume<

Also tweeted my annoyance to @BBCFOUR

I can't believe it! They get to 20:18 just after Challenger disaster, about to explain eth o-ring scandal and ... cuts to Tennis!

I'm 14 minutes in watching it on iplayer...

1 hour ago, alacant said:

I de-mottled, but it loses its wow-ness.

You are right. The colour layer I picked up from 2018 had patches where the nebula was balanced to grey, so any stretching just left them bleached out.

I've had a second go, still going for 'impact' rather than tastefulness, but I colour balanced the RGN image better first:

Thanks to @perdrix for advice on how to stack multiple sessions of data in Deep Sky Stacker successfully.

I think this is a bit over-wrought, but hey, it's fun to revisit old data and flog it to death with the happy-stick!

55 minutes ago, perdrix said:

OK - Yes, you are right, you do need a file in Main Group, pick a totally unrelated image and make sure it isn't ticked. Or indeed put you master bias frame there.

No you cannot add the same file to multiple groups.

 

Thanks.

Interestingly, I've noticed that the new version is displaying faint RAW images much better. My Ha RAWS show a lot of red on the camera (presumably it does some scaling automatically) but in windows photo viewer and teh old DSS they only show stars and barely a trace of red.

In the new DSS I can see the nebulosity clearly.

Is this a change - or perhaps because I may have had auto white balance switched on?

(Thanks for your patience!)

29 minutes ago, GlenM said:

Don't use a new blade, use an old blade. Less clogging.

 

Glen.

 

 

Or use cutting oil or paraffin, really help on sticky aluminium alloys.

I'm struggling! Lots of errors that don't seem to be right - telling me I can't use more than one master flat or dark. I'll start again from scratch in case it's because I'm changing an old file list and note any issues as I go:

First, you need a file in the main group before it will creates a second group - that's OK one bias file will do for all.

Added lights to groups 1,2 & 3

It won't let me put the same file into two groups (I want to use the same dark in more than one group).

I've created a copy of my master flat.

Decided to use the same dark across all groups.

Right... stacking now.