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Posts Made By: Larry Citro

October 15, 2004 02:28 PM Forum: CCD Imaging and Processing/Solar System

ngc7331 .. the power of processing

Posted By Larry Citro
hi all,

It's been lousy weather here so I've been fooling around with some new processing ideas. I taken an old image of ngc7331 which was taken with a Takahashi Mewlon 250 at F12 and a ST8E camera with 2x2 binning giving a pixel scale of 1.2 arcsec/pixel.. it is eleven 5min exposures averaged in Maxim DL. It was a night of poor seeing.


I created a composite image of jpgs of the raw image, a image with log scale followed by .5 gamma scaling in MaximDl, a image using Maxim's DD (kernal -user filter 5x5 with all zeros except for the center kernal), and finally a image utilizing the Digitaly developed image imported as a tiff into PaintShopPro and utilizing dodging and burning techniques utilizing a negative image layered over the original image.

The results are interesting so I thought I post them here.

composite image

http://starryforge.com/NotOnSite/7331_processing.jpg

enlarged image of final result

http://starryforge.com/NotOnSite/7331nEW.jpg


Comments Welcomed

clear skies,

Larry Citro

October 17, 2004 02:36 AM Forum: CCD Imaging and Processing/Solar System

ngc672 and IC727

Posted By Larry Citro
hi,

Here's a trio in Triangulum. Taken with a Takahashi Mewlon 250 at f8 (with AP focal reducer) and a ST10XME 2x2 binning. Seeing was poor about 3.5 arcsec. 2hours with 10 min subs.

comments welcomed,

Larry Citro

October 18, 2004 02:37 AM Forum: Equipment Talk

Lumincon Oiii filter is amazing

Posted By Larry Citro
hi,

I was out tonight with my 12.5" dob and looked at a lot of stuff. Last on the list was the Helix nebula. I centered in the dob as per the DSC's and saw NOTHING with a Meade 24mm wide fov eyepiece. It's in my brightest part of the sky over the sky glow of Reading PA.

I popped in the filter and boy oh boy did the helix pop out.I couldn't believe the difference. A bright ring with a dark center the size of the moon. Some variations in brightness were visible in the ring.

This filter is worth every penny spent.

If you don't have one ... get one.


clear skies,

Larry Citro

October 22, 2004 01:02 PM Forum: CCD Imaging and Processing/Solar System

Bubble Nebula

Posted By Larry Citro
Hi all,

Here's an old image of the Bubble reprocessed. It's 1.5 hours taken with a Takahashi Mewlon 250 at F12 and a ST8E camera binned 2x2.

clear skies,

Larry Citro

October 25, 2004 04:27 PM Forum: CCD Imaging and Processing/Solar System

m8 ha reprocessed

Posted By Larry Citro
hi,

An old image of m8 taken with a Televue Genesis SDF and a ST8E 75 mins Halpha processed in MaximDL and PaintShopPro.

comments welcomed

Larry Citro

November 2, 2004 09:19 PM Forum: CCD Imaging and Processing/Solar System

Bubble Nebula redome

Posted By Larry Citro
Hi,

The Bubble nebula reworked using the high and low pass filters in MaximDl ver 4, which allow selective pixels be filtered.

Tak Mewlon 250 at f8 in poor seeing ( Pickering 4) St10XME 2x2 binning LRGB 90:10:10:15 minutes


comments welcomed


Larry Citro

November 9, 2004 12:31 AM Forum: CCD Imaging and Processing/Solar System

Bubble Nebula final version

Posted By Larry Citro
hi all,

i've reworkwed this image a few times but this is the one I'm sticking with. LRGB 60:10:10:10 mins Mewlon 250 at F12 and ST10XME 2x2 binned.


comments welcomed and appreciated,

clear skies,

Larry Citro

November 9, 2004 03:50 PM Forum: CCD Imaging and Processing/Solar System

m57 (l+ha+oiii):ha:oiii:oii image

Posted By Larry Citro
hi All,

I'm amazed at the processing power of MaximDl ver4 as compared to previous versions. It can align and combine images of different sizes automatically. This is a composite image of m57 with the indivudual frames taken 2 years apart with two different cameras ( ST8E and ST10XME) with my Mewlon 250 at two different focal lenghts ( f12 and f9).

Thelum is a total of 120 mins with 60 clear filter and 30 mins each Ha and Oiii. The RGB was Hashockediiishockediii. The files were resized and aligned automatically in MaximDl with one click of the mouse. The Lum and RGB were saved as tiff files and moved over to PaintShopPro for LRGB combine.




comments welcomed,

Larry Citro

November 11, 2004 06:27 AM Forum: CCD Imaging and Processing/Solar System

ngc3190 galaxy group in Leo

Posted By Larry Citro
hi,

NGC 3190 the other Leo Trio. This image was lost in digital limbo since June. A 2hr Lum exposure with a Vixen VCL 200 and a ST10XME taken with 10 minute subexposures.

comments welcomed.

Larry Citro

November 13, 2004 04:03 AM Forum: CCD Imaging and Processing/Solar System

ngc 1491 in Perseus

Posted By Larry Citro
Hi all,

here's an LRGB image of ngc1491 a smallish (9x6 min) 11 mag nebula in Perseus. Taken with Mewlon250 at F9 and ST10XME. LRGB image 75:5:5:5 minutes ( clouds rolled in in the rgb ..) I plan on getting more color data soon. Processed in MaximDL 4 and PaintshopPro.

http://starryforge.com/NewStuff/1491LrgbPPa3a.jpg

Comments welcomed.

clear skies,

Larry Citro

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