Stay tune.
Here's the new GSO RC scope
Here's the new GSO RC scope
It is still hot from the oven. I have only receive the photos from Jim of GSO. He has yet to provide me with more information other than the photo. So, I'm in the dark too.
Stay tune.
Stay tune.
Focuser also collimate! Somewhat similar to Vixen VC 200L.
Photo Album:
http://www.flickr.com/photos/14113965@N03/
http://www.flickr.com/photos/14113965@N03/
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Airconvent
- Super Moderator
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![[smilie=admire.gif]](./images/smilies/admire.gif "admire")
!
buy! buy! buy! great price for an RC.perseid wrote:Oh no..it is the 8" F9 RC. The 6" and 10" will be released soon, but no date has been given.
I'm still have not heard from Jim yet. I am eager to find out the price, but seems like someone hinted that the price will be something like USD3.3K. Don't believe the price until we hear from GSO.
cheers
The 10 inch will be good. If there is a dedicated reducer/flattener it will be perfect, otherwise f9 is really unacceptable for photography.
Photo Album:
http://www.flickr.com/photos/14113965@N03/
http://www.flickr.com/photos/14113965@N03/
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opticalsysteme
- Posts: 3
- Joined: Tue Jul 15, 2008 11:32 pm
- Location: masserano
I have looked at the photo of the GSO ota and it seems to me it falls in the well-known category of cheap scopes that promise what they can not deliver.
Look carefully at the carbon tube: the screws should not have been placed like that, it is very likely that carbon under them is already delaminated (and, inf the ota should bump into something, it might even break). Some design choices border on the ridiculous: the carbon ota is intended to control thermal dilatation, however, it turns out that the metal dovetail bar is full-length, thus canceling any theoretical advantage.
The collimation screws are not visibile in the cell, and photographic instruments like a Ritchey Chretien needs to be collimated very often; one can expect that the instrument will exhibit off-axis aberration and "defocusing" of the corners of its photographic field.
Neither do I see any forced ventilation system, which in such an instrument are pretty much a "must".
The adjustements of the secondary mirror are very simple, this will attract the users that have never used a Ritchey Chretien before, and have no idea of how difficult and exasperating its collimation is.
Very soon, though, they will realize that reaching good collimation with that mechanics is extremely hard.
I have used mani GSO products and the mechanics has always had precision issues: i dont think this instrument will be an exception.
It is far from a quality product, already at design level. It will be a cheap scope at a cheap price.
Look carefully at the carbon tube: the screws should not have been placed like that, it is very likely that carbon under them is already delaminated (and, inf the ota should bump into something, it might even break). Some design choices border on the ridiculous: the carbon ota is intended to control thermal dilatation, however, it turns out that the metal dovetail bar is full-length, thus canceling any theoretical advantage.
The collimation screws are not visibile in the cell, and photographic instruments like a Ritchey Chretien needs to be collimated very often; one can expect that the instrument will exhibit off-axis aberration and "defocusing" of the corners of its photographic field.
Neither do I see any forced ventilation system, which in such an instrument are pretty much a "must".
The adjustements of the secondary mirror are very simple, this will attract the users that have never used a Ritchey Chretien before, and have no idea of how difficult and exasperating its collimation is.
Very soon, though, they will realize that reaching good collimation with that mechanics is extremely hard.
I have used mani GSO products and the mechanics has always had precision issues: i dont think this instrument will be an exception.
It is far from a quality product, already at design level. It will be a cheap scope at a cheap price.
Thanks for sharing with us your comments! I will be cautious and wait for user reports before jumping in.opticalsysteme wrote:I have looked at the photo of the GSO ota and it seems to me it falls in the well-known category of cheap scopes that promise what they can not deliver.
Look carefully at the carbon tube: the screws should not have been placed like that, it is very likely that carbon under them is already delaminated (and, inf the ota should bump into something, it might even break). Some design choices border on the ridiculous: the carbon ota is intended to control thermal dilatation, however, it turns out that the metal dovetail bar is full-length, thus canceling any theoretical advantage.
The collimation screws are not visibile in the cell, and photographic instruments like a Ritchey Chretien needs to be collimated very often; one can expect that the instrument will exhibit off-axis aberration and "defocusing" of the corners of its photographic field.
Neither do I see any forced ventilation system, which in such an instrument are pretty much a "must".
The adjustements of the secondary mirror are very simple, this will attract the users that have never used a Ritchey Chretien before, and have no idea of how difficult and exasperating its collimation is.
Very soon, though, they will realize that reaching good collimation with that mechanics is extremely hard.
I have used mani GSO products and the mechanics has always had precision issues: i dont think this instrument will be an exception.
It is far from a quality product, already at design level. It will be a cheap scope at a cheap price.
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]