Re: Re-attaching Dew-Guard to rear of secondary mirror
Pictures might help.??
I have removed the secondary mirror from it holder on my Starmaster without removing the holder from the spider. It is not hard.? The screws that hold the mirror in come out. I do suggest wearing gloves.? It is very easy to get figure prints on your secondary mirror.
Chris
On Fri, Dec 2, 2022 at 10:32 AM Phill Roey < pcphill@...> wrote: I'm not sure it's the same, but on our 18" UC you can remove the screws holding the secondary cylinder to spider/collimator mount and remove the foam, dew heater, and mirror from there.
Hi, I wonder if anyone can help, please? I think that the Dew-Guard pads to the back of my secondary mirror on my 20" f/4 classic Obsession have come loose as it no longer seems to come on in use unless I hold the sensor between my fingers.? It's nothing to do with the battery.? On one occasion the mirror fell out, fortunately not when the OTA was in place and I pushed it back into the sleeve but suspect that the connections to the Dew Guard have become detached. My question is: how do I remove the secondary mirror properly and safely from the metal sleeve / holder? I can see some screws that may open up the cylindrical sleeve, but am not sure I should touch these.
Thanks for any advice. Mike G-H, SW France.
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Re: Re-attaching Dew-Guard to rear of secondary mirror
I'm not sure it's the same, but on our 18" UC you can remove the screws holding the secondary cylinder to spider/collimator mount and remove the foam, dew heater, and mirror from there.
Hi, I wonder if anyone can help, please? I think that the Dew-Guard pads to the back of my secondary mirror on my 20" f/4 classic Obsession have come loose as it no longer seems to come on in use unless I hold the sensor between my fingers.? It's nothing to do with the battery.? On one occasion the mirror fell out, fortunately not when the OTA was in place and I pushed it back into the sleeve but suspect that the connections to the Dew Guard have become detached. My question is: how do I remove the secondary mirror properly and safely from the metal sleeve / holder? I can see some screws that may open up the cylindrical sleeve, but am not sure I should touch these.
Thanks for any advice. Mike G-H, SW France.
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Re-attaching Dew-Guard to rear of secondary mirror
Hi, I wonder if anyone can help, please? I think that the Dew-Guard pads to the back of my secondary mirror on my 20" f/4 classic Obsession have come loose as it no longer seems to come on in use unless I hold the sensor between my fingers.? It's nothing to do with the battery.? On one occasion the mirror fell out, fortunately not when the OTA was in place and I pushed it back into the sleeve but suspect that the connections to the Dew Guard have become detached. My question is: how do I remove the secondary mirror properly and safely from the metal sleeve / holder? I can see some screws that may open up the cylindrical sleeve, but am not sure I should touch these.
Thanks for any advice. Mike G-H, SW France.
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Re: Getting ready for some remote observing with the UC18
Tony, I remotely observe with my UC18 and take lots of photos. There are some posted in the photo section of this site. I do recommend you take a look at the Mallincam DS287C camera that can stack and take programmable length exposures. I posted a block diagram in the photos section of this site you might find helpful.  Good luck. Richard
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Re: Getting ready for some remote observing with the UC18
Why a UC18 for imaging? Won¡¯t you get much better imaging results with a eq mounted scope designed for that?
Check the archive for previous detailed message on how another user set his up for remote viewing.?
On Mon, Nov 21, 2022 at 10:48 AM Anthony Calloway < a.calloway@...> wrote: Hi Everyone,? I intend to purchase an Obsession 18" UC? telescope as soon as my upcoming surgery is behind me. I really would like to use this for Deep sky photography and? spectroscopic imaging . Am I being too optimistic or is this scope capable if suitably upgraded.? I assume I need a DSLR? camera but not sure what else ? Can anyone please provide advice. Thank You Tony Calloway
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Re: Getting ready for some remote observing with the UC18
Hi Everyone,? I intend to purchase an Obsession 18" UC? telescope as soon as my upcoming surgery is behind me. I really would like to use this for Deep sky photography and? spectroscopic imaging . Am I being too optimistic or is this scope capable if suitably upgraded.? I assume I need a DSLR? camera but not sure what else ? Can anyone please provide advice. Thank You Tony Calloway
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Re: UC18 remote control slew, Focus, Filter Changer
Richard,
GREAT use of my version fo the FilterSlide assembly!
Congratulations, that is a great setup for the 18¡± UC!!
toggle quoted message
Show quoted text
On Nov 13, 2022, at 11:09 AM, James Sofia via < drsofia@...> wrote:
Wow you got it made Richard!
Jim
On Saturday, November 12, 2022 at 10:08:41 p.m. EST, Richard < rmille64@...> wrote:
Thought I'd share my UC18 setup.
<dummyfile.0.part>
Filter changer software
<dummyfile.1.part>
<dummyfile.2.part>
I like the temperature compensation of the focuser that makes slight adjustments as the night gets colder.? I have a temp probe plugged into the focuser for this feature.
<dummyfile.3.part>
And to get that perfect focus I made a Bahtinov Mask for my initial focus setup that sits just above the secondary mirror (takes about 5 to 10 seconds).??
<dummyfile.4.part>
Make sure I stay aware of the dew point--sort of my Telescope weather station.
<dummyfile.5.part>
Then save all my "meta" data in a MS Access database:? camera settings, GPS coordinates, SQM, filter, weather data, photo, star chart, battery voltage that runs the rig.
<dummyfile.6.part>
and here I remotely observe on my big screen TV.? I remotely slew with Stellarium.
<dummyfile.7.part>
Regards,
Richard
<dummyfile.4.part><dummyfile.3.part><dummyfile.6.part><dummyfile.5.part><dummyfile.7.part><dummyfile.0.part><dummyfile.2.part><dummyfile.1.part>
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Re: UC18 remote control slew, Focus, Filter Changer
Wow you got it made Richard!
Jim
On Saturday, November 12, 2022 at 10:08:41 p.m. EST, Richard <rmille64@...> wrote:
Thought I'd share my UC18 setup.  Filter changer software   I like the temperature compensation of the focuser that makes slight adjustments as the night gets colder.? I have a temp probe plugged into the focuser for this feature.  And to get that perfect focus I made a Bahtinov Mask for my initial focus setup that sits just above the secondary mirror (takes about 5 to 10 seconds).??  Make sure I stay aware of the dew point--sort of my Telescope weather station.  Then save all my "meta" data in a MS Access database:? camera settings, GPS coordinates, SQM, filter, weather data, photo, star chart, battery voltage that runs the rig.  and here I remotely observe on my big screen TV.? I remotely slew with Stellarium.  Regards, Richard
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UC18 remote control slew, Focus, Filter Changer
Thought I'd share my UC18 setup.  Filter changer software   I like the temperature compensation of the focuser that makes slight adjustments as the night gets colder.? I have a temp probe plugged into the focuser for this feature.  And to get that perfect focus I made a Bahtinov Mask for my initial focus setup that sits just above the secondary mirror (takes about 5 to 10 seconds).??  Make sure I stay aware of the dew point--sort of my Telescope weather station.  Then save all my "meta" data in a MS Access database:? camera settings, GPS coordinates, SQM, filter, weather data, photo, star chart, battery voltage that runs the rig.  and here I remotely observe on my big screen TV.? I remotely slew with Stellarium.  Regards, Richard
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Re: Aluminium Clamps For secondary Cage 18" Classic
?Hello, yes, I already contacted Gary for equipment, despite his retirement, he helped me a lot and managed to provide me with equipment. Yesterday I had Dave from Obsession, the classic has long been discontinued, no more parts available for this model.
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Re: Aluminium Clamps For secondary Cage 18" Classic
I needed an altitude drive cable for my 18 inch classic. I contacted Gary Myers with StellerCat and he supplied the cable. Perhaps he has the clamp sets you need.?
Mark Watson
-----Original Message-----
From: Guillaume <guillaumetmt@...>
To: [email protected]
Sent: Mon, Nov 7, 2022 2:31 am
Subject: [ObsessionUsers] Aluminium Clamps For secondary Cage 18" Classic
Hello everyone, on the Obsession Telescope website, in the spare parts section, I cannot find the aluminum clamps for the secondary cage of the Classic models, mine is an 18¡± Classic and I want to get 4 complete systems. Do you know where to find this? image attached. I emailed Obsession but as the Classic model is discontinued, I doubt they can supply me with spare parts. Thank you for your responses.
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Re: Aluminium Clamps For secondary Cage 18" Classic
I needed an altitude drive c
-----Original Message-----
From: Guillaume <guillaumetmt@...>
To: [email protected]
Sent: Mon, Nov 7, 2022 2:31 am
Subject: [ObsessionUsers] Aluminium Clamps For secondary Cage 18" Classic
Hello everyone, on the Obsession Telescope website, in the spare parts section, I cannot find the aluminum clamps for the secondary cage of the Classic models, mine is an 18¡± Classic and I want to get 4 complete systems. Do you know where to find this? image attached. I emailed Obsession but as the Classic model is discontinued, I doubt they can supply me with spare parts. Thank you for your responses.
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Aluminium Clamps For secondary Cage 18" Classic
Hello everyone, on the Obsession Telescope website, in the spare parts section, I cannot find the aluminum clamps for the secondary cage of the Classic models, mine is an 18¡± Classic and I want to get 4 complete systems. Do you know where to find this? image attached. I emailed Obsession but as the Classic model is discontinued, I doubt they can supply me with spare parts. Thank you for your responses.
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Obsession Classic 18/F4.5 secondary configuration request help
Obsession Classic 18/F4.5 secondary configuration request help
Hello, I want to upgrade my Obsession Classic 18" F4.5 for imaging with equatorial platform and Full Frame sensor (24x36)
My questions :
Use of a big Paracorr 3" from Televue
Focus starlight instruments FTF3215B-A
Starlight instrument adapter A32-3203-1
Adapter 3" Starlight instruments for the big Paracorr EC32-3205-3CR
I change the secondary mirror for a 4"
To adapt all this, I do not touch my current secondary cage, a new one will be manufactured, it will certainly be necessary to modify the length of the tubes to reach the focal point, the draw being different (currently I have the FTF2015BCR used with Paracorr 2, but I have this unpleasant vignetting with the 24x36)
My questions are simple, would this configuration be the right one, do we agree, the only focuser at Starlight instruments capable of accepting the big Paracorr 3" from Televue is the FTF3215B-A model? (I have looked at the 3015 but the clear aperture is not big enough for big Paracorr from what I have read¡)
Thank you for your advice and comments.
Sincerely, Guillaume.
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Re: NO CONTACT WITH OBSESSION TELESCOPES
Thank you all for replying. I could not send him an email, every time I tried it failed go through .Verizon advised that something was wrong with his phone service every time I tried to call him. It's nothing that won't wait but I was wondering if it was something worse in these strange times. Thanks to everyone Tony
On Monday, October 31, 2022 at 06:04:20 PM EDT, Christine Zeltner <czeltner356@...> wrote:
I have a 15 UC. ?Maybe I can help.
Chris? On Oct 31, 2022, at 6:02 PM, Chris Zeltner <czeltner356@...> wrote:
?
What do you need from him? ?He might be on vacation. On Oct 31, 2022, at 5:32 PM, Dragan Nikin <dragannikin@...> wrote:
?
Dave is out of town with family at the moment. He should be returning before too long.?
Just drop him an email. I'm sure you'll hear from him soon.?
Clear skies,?
-Dragan
Sent from my mobile device. Please excuse any typos.?
-------- Original message -------- From: "Jeremy Carlo via groups.io" <jpc2001@...> Date: 10/31/22 4:16 PM (GMT-06:00) Subject: Re: [ObsessionUsers] NO CONTACT WITH OBSESSION TELESCOPES
I was just in contact with Dave on October 18, at
telescopes@... .? I believe he's currently working on
getting a batch of telescopes completed for shipment next month,
so he might be a bit slow in responding.
Jeremy
Hi My name is Tony Calloway and I'm in the process of purchasing a
second hand 15" Obsession telescope. Can anyone advise why I can't
make direct contact either by phone or email with OBSESSION
TELESCOPS
Thank you?
tony
--
-.. . -. ..--- --.. .-.. --.-
Jeremy P. Carlo
jcarlo@...
Cell: (917) 612-2163
Work: (610) 519-3279
-.. . -. ..--- --.. .-.. --.-
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Re: Replace StellarCat drive wire
Gary just posted this on the ServoCat group page:
We use 3/64" now on all sizes. It is McMaster Carr: 3458T22
Richard
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Replace StellarCat drive wire
Has anyone replaced or does anyone know what size of the StellarCat drive wire.? Not the electrical ones, the motor drive wire on Altitude.? I can make the looped ends, but I really don't know the size. Does anyone know a source?? Al
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Re: NO CONTACT WITH OBSESSION TELESCOPES
I have a 15 UC. ?Maybe I can help.
toggle quoted message
Show quoted text
On Oct 31, 2022, at 6:02 PM, Chris Zeltner <czeltner356@...> wrote:
? What do you need from him? ?He might be on vacation. On Oct 31, 2022, at 5:32 PM, Dragan Nikin <dragannikin@...> wrote:
? Dave is out of town with family at the moment. He should be returning before too long.?
Just drop him an email. I'm sure you'll hear from him soon.?
Clear skies,?
-Dragan
Sent from my mobile device. Please excuse any typos.?
-------- Original message -------- From: "Jeremy Carlo via groups.io" <jpc2001@...> Date: 10/31/22 4:16 PM (GMT-06:00) Subject: Re: [ObsessionUsers] NO CONTACT WITH OBSESSION TELESCOPES
I was just in contact with Dave on October 18, at
telescopes@... .? I believe he's currently working on
getting a batch of telescopes completed for shipment next month,
so he might be a bit slow in responding.
Jeremy
Hi My name is Tony Calloway and I'm in the process of purchasing a
second hand 15" Obsession telescope. Can anyone advise why I can't
make direct contact either by phone or email with OBSESSION
TELESCOPS
Thank you?
tony
--
-.. . -. ..--- --.. .-.. --.-
Jeremy P. Carlo
jcarlo@...
Cell: (917) 612-2163
Work: (610) 519-3279
-.. . -. ..--- --.. .-.. --.-
|
Re: NO CONTACT WITH OBSESSION TELESCOPES
What do you need from him? ?He might be on vacation.
toggle quoted message
Show quoted text
On Oct 31, 2022, at 5:32 PM, Dragan Nikin <dragannikin@...> wrote:
? Dave is out of town with family at the moment. He should be returning before too long.?
Just drop him an email. I'm sure you'll hear from him soon.?
Clear skies,?
-Dragan
Sent from my mobile device. Please excuse any typos.?
-------- Original message -------- From: "Jeremy Carlo via groups.io" <jpc2001@...> Date: 10/31/22 4:16 PM (GMT-06:00) Subject: Re: [ObsessionUsers] NO CONTACT WITH OBSESSION TELESCOPES
I was just in contact with Dave on October 18, at
telescopes@... .? I believe he's currently working on
getting a batch of telescopes completed for shipment next month,
so he might be a bit slow in responding.
Jeremy
Hi My name is Tony Calloway and I'm in the process of purchasing a
second hand 15" Obsession telescope. Can anyone advise why I can't
make direct contact either by phone or email with OBSESSION
TELESCOPS
Thank you?
tony
--
-.. . -. ..--- --.. .-.. --.-
Jeremy P. Carlo
jcarlo@...
Cell: (917) 612-2163
Work: (610) 519-3279
-.. . -. ..--- --.. .-.. --.-
|
Re: NO CONTACT WITH OBSESSION TELESCOPES
I know he was going to be out of the country a few weeks...
Hi My name is Tony Calloway and I'm in the process of purchasing a second hand 15" Obsession telescope. Can anyone advise why I can't make direct contact either by phone or email with OBSESSION TELESCOPS
Thank you?
tony
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Christine Zeltner
