AR 10904 August 15th 2006

"Anthony Ayiomamitis" wrote in message
...
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/2...0-04-sharp.jpg


Pete,

This is a wonderful photo and it is scarry how far the "little PST" has
matured!

Anthony.

Scarry? Why?

MT wrote:
"Anthony Ayiomamitis" wrote in message
...

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/2...0-04-sharp.jpg


Pete,

This is a wonderful photo and it is scarry how far the "little PST" has
matured!

Anthony.


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.

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

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

On Wed, 16 Aug 2006 00:26:31 +0300, Anthony Ayiomamitis
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

Originally Posted by bill-in-forres

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

I agree - I think other PSTs could perform as well, given Pete's skills;-)

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.

I see it but I don't believe it! For one thing they don't say 0.5-0.7 band
pass. They do
say 1.0 A. Where do you get those values from for the PST?

MT 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.


I see it but I don't believe it! For one thing they don't say 0.5-0.7 band
pass. They do
say 1.0 A. Where do you get those values from for the PST?



It is my understanding that the original PST's were indeed 1.0 A
whereas the latter models are 0.5-0.7 A.

Anthony.

"Anthony Ayiomamitis" wrote in message
...
MT 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.


I see it but I don't believe it! For one thing they don't say 0.5-0.7
band pass. They do
say 1.0 A. Where do you get those values from for the PST?

It is my understanding that the original PST's were indeed 1.0 A whereas
the latter models are 0.5-0.7 A.

Anthony.

I don't think that's quite right. I think you have the option to purchase
the extra double stacking filter for the PST to make it that way in which
case you are spending the
same as if you just bought a 40 or 60mm solarmax!

http://www.coronadofilters.com/products_pst.html

MT wrote:
"Anthony Ayiomamitis" wrote in message
...

MT 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.


I see it but I don't believe it! For one thing they don't say 0.5-0.7
band pass. They do
say 1.0 A. Where do you get those values from for the PST?

It is my understanding that the original PST's were indeed 1.0 A whereas
the latter models are 0.5-0.7 A.

Anthony.


I don't think that's quite right. I think you have the option to purchase
the extra double stacking filter for the PST to make it that way in which
case you are spending the
same as if you just bought a 40 or 60mm solarmax!

http://www.coronadofilters.com/products_pst.html



Now that you mention it, this is indeed what I had read and later
confused (over time) ... thanks for the reminder.

Anthony.