Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - andy274

Pages: [1]
1
General / Re: gradientHDRComposition
« on: 2017 January 08 10:56:23 »
Hi Georg
I think I've worked out what went wrong initially - a schoolboy error! I don't think i rotated one of the images without saving it prior to running the gradientHDRcompression meaning that it was (I'm guessing) trying to compute the images in different aspect ratios... it was only after i checked both images as you recommended & they were both the same size that i looked at something more elementary!
Cheers
Andy

2
General / gradientHDRComposition
« on: 2017 January 08 07:21:50 »
Hi guys,
this may not be easy to explain.  I have images of M42 at differing exposures.  15mins (m42_900final) & 2mins (m42_120rotate).  The 15min exposures were captured in a different orientation to the 2mins as they were taken over different nights.  I have resolved that using rotate & aligned using dynamic alignment.  The trouble is, the result from dynamic alignment has left m42_120rotate with empty black areas which now i can't resolve in gradientHDRcomposition as the error message - current image width differs from first image width.
Is there any way that i can fill the black areas of this image with data from the 1st image so i can properly use the HDRcomposition to combine both images?
Does this even make sense to anyone? Also, no laughing at the state of both images, I'm just beginning processing like this!
Cheers
Andy

3
Cheers for responding Rob - I also just found out that i can use the dynamic alignment - which I'm going to give a try. 
I take it i can do either method if i wanted to use a combination of either a DSLR on a 72mm Apo scope & a CCD on an 8 inch Ritchey Chretien?
Cheers
Andy

4
Hi guys,
this may be a really simple thing to an expert, but I'm a relative novice. 
Basically, i have just bought a mono CCD & would like to combine objects taken previously with a DSLR.  They look to be different sizes & I'm wondering whether there is a way of combining both images so the Ha can be used to complement the original OSC image.  Can anyone tell me what i need to do/use?
Many thanks
Andy

5
Gallery / Re: Orion Wide Field
« on: 2015 January 16 05:50:04 »
Simply amazing.

6
Bug Reports / 18.3.115 Mac OSX 10.8
« on: 2014 November 16 09:12:15 »
Hi
Am experiencing a problem with the latest version when using batch pre-processing script - continually exits the application.  Have re-booted several times but it doesn't have any impact at all.  Its very frustrating, so i have regressed back to the previous version which has worked flawlessly.
Cheers
Andy

7
Gallery / Re: M31 - 1st image processed using Pixinsight
« on: 2014 May 27 01:48:00 »
Thanks for the feedback Andrea -it's much appreciated.  What functions should I use to reduce it - curves & reduce the saturation maybe?
I did use a range mask during the processing also.
Cheers
Andy

8
Gallery / M31 - 1st image processed using Pixinsight
« on: 2014 May 25 15:40:12 »
Hi all,
here is my 1st image processed using Pixinsight.  https://dl.dropboxusercontent.com/u/93987601/m31-250514.jpg Taken from light polluted Lancashire (UK) skies.  Not sure whether I've over-cooked the processing on this image, but I'm happy that I've pulled as much detail out as i have done.  Unfortunately, the image was the only surviving .fit file from a stacked & aligned image using another piece of software - due only to me not having the raw OSC files  :sad:
My next processed image will be completely Pixinsight processed - i can't believe how good this software actually is, I'm a complete convert.  Many thanks go to Warren & the IP4AP tutorials i followed to get me to this stage.
Please any comments or advice would be gratefully received.
Cheers
Andy

9
thanks guys - i knew it could be done & its helped massively!
Cheers
Andy

10
Hi guys,
not really sure how to phrase the question title, but effectively im asking if there is a way to take OSC images from a Canon 450D camera on a small 3inch APO refractor (for chrominance) and the same target through a Canon 450D with Ha filter (luminence) on an 8inch Ritchey Chretien?
Im sure that there's a way to do this using Pixinsight but im not sure how i'd go about it - can anyone tell me if im dreaming or not!
Cheers
Andy

11
Tutorials and Processing Examples / IP4AP
« on: 2014 May 19 07:36:32 »
Hi guys,
Been dabbling with the idea of PI about a year ago & never dedicated the time it needed to learn - ive rectified that & bit the bullet by ordering Warren's (excellent) tutorials to suppliment what ive learned from this forum & Harrys tutorials.  Its really helped me alot; and added the context i believe i was missing previously.  Ive found it invaluable so far & am now convinced that PI is going to deliver all i think it can.
Just looking forward to practicing what ive learned.  When my trial runs out - im definitely going to be purchasing the fully licence!
Cheers
Andy

12
General / M13
« on: 2014 May 05 09:59:52 »
Hi guys,
Just wanted to say that I've returned to PI as I'm now convinced that PI is the best processing software out there currently.  Ive watched Harry's (excellent) tutorials & I've read a bit on the forum.  Im struggling with noise reduction on a particular image i have of M13.  Ive done a search on the forum & seen how some examples can be used - what i think would be really useful would be a step - by step guide going to the detail of open function, click here etc etc so it can accompany the screenshots or a video would be great.  There are loads of different ways to process an image, but little to explain why a setting or sub process would be good for - i.e. linear fit is better for x image over DBE etc etc.  Does this make sense?
Have to say that its such a powerful tool & can't wait to increase my skillset in PI processing.
Cheers
Andy

13
General / Re: newb question
« on: 2013 October 21 14:35:28 »
Hi Carlos,
they are all in .cr2 format & im checking the CFA option.  Ive amended the values as you've suggested and am re-running the batch script process. Will let you know how i get on
Cheers
Andy

14
General / Re: newb question
« on: 2013 October 21 12:31:15 »
Hi Carlos,
i have just used the raw images captured on my astro-modded canon 450d DSLR
The light frames were all 10min exposures & i take the darks at the same temperature as the light frames, i have always been told that flats & bias shots arent really affected by temperature.
Cheers
Andy

15
General / newb question
« on: 2013 October 21 12:15:51 »
Hi all,
my 1st post - completely new to PI, which i think is fantastic incidentally - i used a combination of IRIS & Photoshop for all my processing prior to finding PI.
I have been following Harry's videos - which are fantastic.  My issue is around the creation & integration of calibration frames.  I followed the steps on Harry's video using the batch process routine, loading my darks, flats & bias (offsets in IRIS) raws, then my lights - which are of M42.  When compiling - it fails when trying to register the lights using the pre-processing method, yet when i just use the star alignment function & no calibration - it works perfectly.
What am i doing wrong?  I'd dearly love to nail this part - i never ever have had to take any other calibration frames other than those ive mentioned & had never even heard of a dark flat master before, never mind knew how to get one or what its for!!!
Any help or suggestions you may have would be gratefully received.
Cheers & apols for the epically long post!!!
Andy

Pages: [1]