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Date: 15 Aug 2006 13:46:29
From: Pete Lawrence
Subject: AR 10904 August 15th 2006
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Active Region 904 is now roughly on the centre line of the Sun.
Amazing how much influence it has over the surrounding region,
especially considering it's not really that large a spot group.
http://www.digitalsky.org.uk/solar/2006-08-15_11-40-04-sharp.jpg
--
Pete
http://www.digitalsky.org.uk
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Date: 15 Aug 2006 18:30:53
From: Anthony Ayiomamitis
Subject: Re: AR 10904 August 15th 2006
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Pete Lawrence wrote:
> Active Region 904 is now roughly on the centre line of the Sun.
> Amazing how much influence it has over the surrounding region,
> especially considering it's not really that large a spot group.
>
> http://www.digitalsky.org.uk/solar/2006-08-15_11-40-04-sharp.jpg
>
Pete,
This is a wonderful photo and it is scarry how far the "little PST" has
matured!
Anthony.
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Date: 16 Aug 2006 01:04:09
From: Pete Lawrence
Subject: Re: AR 10904 August 15th 2006
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Some more shots available here...
http://www.digitalsky.org.uk/solar/ar10904/ha-20060815.html
--
Pete
http://www.digitalsky.org.uk
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Date: 16 Aug 2006 01:30:35
From: Graham W
Subject: Re: AR 10904 August 15th 2006
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Pete Lawrence wrote:
> Some more shots available here...
>
> http://www.digitalsky.org.uk/solar/ar10904/ha-20060815.html
Very nice Pete!
--
Graham W http://www.gcw.org.uk/ PGM-FI page updated, Graphics Tutorial
WIMBORNE http://www.wessex-astro.org.uk/ Wessex Astro Society's Website
Dorset UK Info, Meeting Dates, Sites & Maps
Change 'news' to 'sewn' in my Reply address to avoid my spam filter.
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Date: 15 Aug 2006 11:59:36
From: Bill-in-Forres
Subject: Re: AR 10904 August 15th 2006
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> >
> > Scarry? Why?
> >
>
> (1) 40 mm filter ... (2) $500 or less for 0.5-0.7 Angstrom bandpass ...
> the PST is the most basic of Coronado's offerings and this result is
> outstanding for the "bottom of the h-alpha product line".
>
> Anthony.
There are thousands of PSTs out there but very few of them produce
images like that.
Perhaps most of the credit should go to the imager and the way he has
mastered the combination of the 'scope, the camera and the software.
Bill
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Date: 16 Aug 2006 00:26:31
From: Anthony Ayiomamitis
Subject: Re: AR 10904 August 15th 2006
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Bill-in-Forres wrote:
>>>Scarry? Why?
>>>
>>
>>(1) 40 mm filter ... (2) $500 or less for 0.5-0.7 Angstrom bandpass ...
>>the PST is the most basic of Coronado's offerings and this result is
>>outstanding for the "bottom of the h-alpha product line".
>>
>>Anthony.
>
>
Bill,
> There are thousands of PSTs out there but very few of them produce
> images like that.
> Perhaps most of the credit should go to the imager and the way he has
> mastered the combination of the 'scope, the camera and the software.
There is no question that the imager and the processing thereafter play
a significant role in producing a great image. However, at the same
time, one cannot produce a great image if the optics do not allow for a
great image from the start. I paid approximately $1500/inch of aperture
for my AP160 and I can assure you that great equipment is the first step
to producing great images.
Hopefully Pete's unit is representative and not a hand-picked premium
sample unit.
Anthony.
> Bill
>
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Date: 15 Aug 2006 22:50:24
From: Pete Lawrence
Subject: Re: AR 10904 August 15th 2006
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On Wed, 16 Aug 2006 00:26:31 +0300, Anthony Ayiomamitis
<anthony@perseus.no2spam.gr > wrote:
>Hopefully Pete's unit is representative and not a hand-picked premium
>sample unit.
Actually it was a cheap second hand PST I bought to dip my toe into
the water. I have no idea if represents a particularly good one or not
but I'd be interested to image through another in order to see. I did
buy it for the express purpose of trying to get a decent image out of
it though and so far, I've been very happy with the results.
--
Pete
http://www.digitalsky.org.uk
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