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Posts Made By: Maurice Clark

April 4, 2002 12:03 PM Forum: CCD Imaging and Processing/Solar System

NGC 2070

Posted By Maurice Clark

Hi all,

Here is one of my images from when I used to live 'Down Under'.

NGC 2070, More commonly known as the Tarantula Nebula

The image is a 5 minute exposure with a Meade 416XT and my
5" f/5 refractor at prime focus.

You can see the setup on my webpage at;
http://www.acad.Carleton.edu/curricular/PHYS/Faculty/MClark/tele.htm

Scroll down to the bottom of the page for the pictures of the refractor
in the configuration for the images. (Complete with several layers of
newspaper to make the tube fit the rings!) :-)

Enjoy,

Maurice

April 4, 2002 12:13 PM Forum: Film Astrophotography - Imaging and Processing

NGC 3372

Posted By Maurice Clark

One for the DSO-deprived observers in the northern hemisphere!
(Hey I know. I live there now!) <grin>

NGC 3372. Also known as the Keyhole nebula and the Eta carina nebula
A great object that is visible to the naked eye even in moonlight.

30 minutes exposure, Kodak Ektachrome 400.
5" f/5 refractor, prime focus.

The field is about 3* x 2*

Cheers

Maurice

April 11, 2002 02:16 PM Forum: Off Topic Discussions

Comet discoverer Hyakutake dies

Posted By Maurice Clark

Some sad news from the MPML board. (With apologies to anyone on this list that also recieves MPML messages)

I met Yuji in 1996 when he presented a talk on his scoveries at the Perth Observatory. He also autographed a photograph of the comet That I had taken. What I most remember about him however, was his modesty. He always said that it should not be him that was congradulated, but the comet. As he put it, "I only (?) found the comet. It is the comet itself that is putting on the great display."

Maurice


>
>
> http://www.japantoday.com/e/?content=news&cat=1&id=210973
>
> Comet discoverer Hyakutake dies at 51
> Kyodo News
> April 11, 2002
>
> KAGOSHIMA - Yuji Hyakutake, an amateur Japanese
> astronomer who discovered "Comet Hyakutake" in
> 1996, died Wednesday evening in Kagoshima
> Prefecture, due to internal bleeding caused by a
> heart aneurysm, his family said Thursday. He was
> 51.
>
> Hyakutake, a native of Nagasaki Prefecture, won
> international acclaim after he found the new
> comet, using a powerful pair of binoculars on Jan
> 30, 1996, in the town of Hayato in Kagoshima.






May 26, 2002 08:35 AM Forum: Film Astrophotography - Imaging and Processing

Re: Lights on moon??

Posted By Maurice Clark

Hi.

If what you are refering to is the bright region on the right-hand edge of the Moon, it is the crater Aristarchus, which is well known as one of the brightest features on the moon.

Cheers

Maurice

July 7, 2002 01:15 PM Forum: Equipment Talk

Help for 10", 12" LX200, C-11

Posted By Maurice Clark

Hi all! I was hoping that someone who has any of the above scopes could give me the spacing of the 3 mounting bolt holes on the base of the scope, where the scope attaches to the wedge. I am trying to find out if any of these three would be compatible with an existing 8" LX200 permant pier mounting plate.

Thanks.

Maurice

August 1, 2002 09:14 PM Forum: Deep Sky Observing

Auroral display active

Posted By Maurice Clark

Hi everyone.

There is a major auroral display active now from Northfield Minnesota.

There is a very bright arc to the north, about 20* up from the horizon and there have been many very bright arcs reaching up to the zenith. About 30 minutes ago there were VERY fast moving streamers around the zenith and down towards the west.

Get outside and see it if you can.

Cheers,

Maurice

August 2, 2002 03:11 PM Forum: Film Astrophotography - Imaging and Processing

Aug. 2 Aurora.

Posted By Maurice Clark

Hi all, here is a photo of last night's fantastic auroral display.

60 seconds exposure, Fuji Super HQ 200 film. 50mm f/1.8 OM2.

Taken from Northfield MN.

Enjoy.

Maurice

August 4, 2002 11:41 AM Forum: Equipment Talk

Focal reducer question

Posted By Maurice Clark

Hi all.

I am looking for a focal reducer that will fit onto a large refractor. (Standard 1.25" or 2" focuser) I have tried the celestron and Meade reducers, but they will not fit.

Anyone have any suggestions as to where one suitable for a refractor might be found?

Thanks,

Maurice

August 4, 2002 03:01 PM Forum: CCD Imaging and Processing/Solar System

Test images with a 16" refractor

Posted By Maurice Clark

Hi all,

I have been experimenting with attaching a CCD to the old 16" refractor at the Goodsell Observatory. This is a massive instrument, with a focal ratio of f/15! It was build in the 1880's and still has the old weight drive. This makes imaging VERY difficult as there is no way of guiding. After a few nights I have managed to adjust the drive so that I can take 120 second images without too must drift.

It was taken with an SBIG ST-8, binned 2x2.

Here are a few of the first images. This one is of M57 and is a combination of 3, 120 second images, processed with Megafix.

Cheers,

Maurice

August 4, 2002 03:12 PM Forum: Deep Sky Observing

The Straight Wall

Posted By Maurice Clark

Hi all.

A while back there was a discussion about the Straight Wall on the Moon. At the time I mentioned that just after 3rd quarter phase, it was possible to see the Wall as a bright line, rather than as a dark line as it appears when the Moon is waxing.

A few nights ago I was able to image the Wall as a bright line, and here is the image. It is a 0.01 sec image taken with an SBIG ST-8 CCD, binned 2x2, and attached to the prime focus of a 16" f/15 refractor.

Enjoy.

Maurice