Hi Daniel,
I've been trying to use HUGIN to stitch mosaics of the Rosette nebula
and ended up with a distorted image. Part of the nebula was missing and
kind of squeezed together new the middle. The preview image showed that
some of the segments were turned slightly. I have come to the conclusion
that my problem is the fact that HUGIN corrects for all kind of effects
such as curvature or perspective, etc which are common in terrestrial
imaging using different lenses. However images shot with a telescope of
objects in the night sky are for all practical purpose FLAT.
It sure seem like HUGIN is a very powerful program, but does it have a
simple flat stitch function that will allow the stitching of images
without turning or skewing the segments? I see that there are all kinds of
different options to use for stitching unfortunately I not familiar with
any of them.
Your suggestion would be greatly appreciated.
Thanks
Nor
On Thursday, December 3, 2020 at 7:26:27 AM UTC-5 nor s wrote:
> Hi Daniel,
> Wow you sure have that process down pat. I will have a closer look at
> your steps and see how they will work on my stuff.
>
> Cheers
> Nor
>
>
> On 12/3/2020 6:56 AM, 'dkloi' via hugin and other free panoramic software
> wrote:
>
> Stitch looks good. You can see in the stitch tab that the FOV is now a
> more reasonable 4 deg x 5 deg. The optimisation process seems to have come
> up with a more proper value for the lens HFOV.
>
> I have made available example Hugin pano projects at:
> http://www.dkloi.co.uk/?p=1490
> http://www.dkloi.co.uk/?p=1501
> http://www.dkloi.co.uk/?p=1518
> They are for complete panospheres but many of the the basic concepts are
> unchanged for a partial pano and may be useful for gaining familiarity with
> Hugin.
>
> On Wednesday, 2 December 2020 at 18:16:46 UTC njsg...@gmail.com wrote:
>
>> HI
>> I've been playing around with Hugin 2019.2 and finally got it to work
>> today. Yes the finished size is rather large since each segment is
>> 3020x1985 which roughly translates to 6040x7940 as the completed 2x4
>> mosaic. I've attached a finished mosaic and the screen capture of the
>> stitcher tab that I finally used.
>>
>> Not really being familiar with this program I was just poking and hoping
>> that something would work. ONce I have it all figured out I'll put
>> together a work flow.
>>
>> Thanks for the reply.
>> Cheers
>> Nor
>>
>>
>>
>>
>> On 12/2/2020 10:24 AM, 'dkloi' via hugin and other free panoramic
>> software wrote:
>>
>> Welcome to the group. It would help if you could provide the images. You
>> should be able to stitch astronomical images together. I note on the log
>> file:
>> Number of active images: 3
>> Output exposure value: 0.0
>> Canvas size: 6040x7940
>> ROI: (0, 0) - (6040, 7940)
>> FOV: 360x473
>> Projection: Equirectangular(2)
>>
>> The FOV is a bit big (473 deg vertically), this is probably causing the
>> problem. The FOV of you images are probably too large, this can be manually
>> set (by specifying the focal length and crop factor) but this may have been
>> optimised to the wrong values, leading to the problem.
>>
>> Once we can see the photos and your Hugin project file, we can tell you
>> more.
>> On Wednesday, 2 December 2020 at 06:13:03 UTC njsg...@gmail.com wrote:
>>
>>> Hi,
>>> A little about me. I've been doing astrophotography for many years and
>>> occasionally want to image an object that is larger than the field of view
>>> of my equipment. The obvious way of doing that is to image the object in
>>> sections and then stitch them together to form one complete image. In the
>>> past I have been using photoshop to manually match the segments and back
>>> grounds. A difficult problem at times. An acquaintance put me on to Hugin
>>> so I loaded up version 2012 and gave it a try on the, Pleiades. To my
>>> pleasant surprise it did a very good job of combining the 2x3 image grid
>>> into a single picture.
>>>
>>> Later When I tried to open Hugin again, it requested the lens info twice
>>> and then quit. I tried it several more time even after rebooting the PC but
>>> still no luck. I decided to un install2012 and get the latest from the
>>> website 2019.2 for 64bit WIndows10 PC.
>>>
>>> When I first started the new version it complained about open GL not
>>> available. After rerunning it I got no more errors and loaded my 8 images
>>> 2x4 grid mosaic. Each image is 3020x1985 with an overlap of about 10%. I
>>> selected the points automatically but noticed there were no points is some
>>> of the images on the top and bottom edge so I added them.
>>>
>>> Finally when I click the STITCH button it fails.
>>>
>>>
>>> The log is attached.
>>>
>>> Any help would be appreciated. If I'm using the wrong program to stitch
>>> these mosaics together perhaps someone can recommend one that would work
>>> better.
>>>
>>> Thanks
>>> Nor
>>>
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