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  Tuesday, 14 September 2021
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Hello all 
i want to plan a txwo pan mosaic of the winter prime target, horsehead nebula and orion 

Capture d’écran 2021-09-14 204028.png

but for the exposure duration i m not sure what to put 
may be 120s LRGB  for the whole pane and some 30s L for orion in order to get HDR result ? 

what do you think of ? 

florent
11 months ago
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#3720
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M42 submitted as two jobs:

1253 - Lum + Ha
1254 - R, G, B
11 months ago
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#3719
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Hi ! 
lets go ! 
i didnt plan the second part as the pier can change 

i will like to test HDR on L , nice selection of sub exposre
11 months ago
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#3718
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Hi All,

I can see that we have a Horsehead submitted for this pier, but I can't see an M42.

I would like to create a deep LRGB image. It still fits into the native FL of the FSQ like this:

M42.png

It will be an HDR image and I would suggest.

L - 15x 10sec, 15x30, 15x60, 15x120
R - 20x15, 20x60, 20x240
G- 20x15, 20x60, 20x240
B- 20x15, 20x60, 20x240
Ha- 20x15, 20x60, 20x240

We could split the job in two. Looking at half the number of subs in the first job to check we have sufficient detail.

Let me know what you think. I don't want to block Florent's original plan, but would like to get a nice deep image.
Attachments (1)
1 year ago
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#3717
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Stop giving me ideas with the 105mm :) :)

Steve
... and atleast a HeUIB filter...
1 year ago
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#3716
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yep, only need one image in winter , one image in summer :)
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Brilliant Florent all our mosaic problems solved! I guess the other piers are now all redundant 



Screenshot_20210915-190048~2.jpg
1 year ago
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#3714
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Hi Florent, 

Now Steve put that idea of using a fisheye lens with that camera back in your head and try to forget about it. :) 

Cheers, 

Ray 


may be a 15mm ? :) 

FornaxxHOv2_small.jpg
Attachments (1)
1 year ago
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#3713
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this camera has quite a high dynamic range Vikas so I dont think you will go far wrong at 20/30s for the core

Steve

Please ignore my dylexia wherever possible, just be thankful I can control my Tourettes ;)

Things to do, so little time!


1 year ago
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#3712
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Not sure what exposure to put in not to blwo the core , i guess about 30s shud do it but will lets others more knowledgable chip in, but shud u not be putting in some Ha also.
vikas
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Hi Florent, 

If Steve manages to get out there say early November, then we might consider starting the mosaic from then. Not sure what you have planned so this probably is a nonstarter , but maybe do the top and bottom sections first, then start on the middle. In the meantime let's see this gigamosaic. In terms of pixels still less than with the present setup. Who knows come Black Friday someone may have a 128gb ram computer for sale at a good price. 

Now Steve put that idea of using a fisheye lens with that camera back in your head and try to forget about it. :) 

Cheers, 

Ray 
1 year ago
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#3710
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Stop giving me ideas with the 105mm :) :)

Steve

Please ignore my dylexia wherever possible, just be thankful I can control my Tourettes ;)

Things to do, so little time!


1 year ago
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#3709
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ok , i will submit only on frame of the horse nebula so .

A 12 pane mosaic, may be a bit too much in pixel size .   With the corner being too much compromise , i think we have better to stick to 2 pane mosaic on the larger border of the image. or to  put the conrner of empy frame in the midlle of nowhere 

as say Steve , with such a fov i understand he surprised that we launch so much mosaic. 
but as always , we want what we havent :) 

may be a better idea to put a 6200MM on the 105mm  sigma :)
 
1 year ago
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#3708
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is there any spain trip scheduled ? 


If all stays well with the Covid travel situation then November we have a trip planned

cheers

Steve

Please ignore my dylexia wherever possible, just be thankful I can control my Tourettes ;)

Things to do, so little time!


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Hi Florent, 

Oh! I've experienced this situation in the past and missed seeing relevant posts. Unless you religiously log in regularly and read a new topic, you will not automatically be notified. 

Edit re misinformation above. (You need to check the box to subscribe and be notified of all replies. You will automatically be subscribed if you post a reply.) 


It was Vikas who initiated the discussion on going native focal length, but this continued on another topic where Steve mentioned the possibility of a visit in November. 

Hopefully someone who knows what to do, will respond and supply the actual links. 

In the meantime the 2 threads are, "Shall we change back to native focal length?", by Vikas on 07 Sep. The other, where Steve gives details of the visit, is on the thread, "12 panel mosaic of the.....", by Mike on 05 Sep. 

Cheers, 

Ray 
1 year ago
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#3706
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is there any spain trip scheduled ? 
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Hi Florent, 

A very popular choice, one I think we all had in mind.

Taking into consideration what we currently have queued up, it's possible that the set up may be altered when its time comes. We'd just need to take into consideration the smaller fov, unless Steve plays a trick on us and rotates the camera about 90 degrees. :) I'm sure he won't, but that might depend on how many cervezas he'd had earlier. 

Cheers, 

Ray 
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