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Everything posted by Cornelius Varley
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Does the eyepiece holder disassemble and the large flat part have a t-thread on the upper surface ?
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Skywatcher tracking mount help.
Cornelius Varley replied to Steve Reed's topic in Getting Started Equipment Help and Advice
I think I found this on the internet some years ago, it might help. 1. plug in the power cord 2. ( latitude scale at top of fork arm ) using the directional keys on the hand control, adjust the telescope tube until the latitude scale reads 0 3. point the telescope tube to the north using the directional keys on the hand control ( I find pointing it with the North star in the centre of view and then setting the latitude scale to 0 works better ) 4. after the above completed, the telescope is in the home position 5. turn off the power by unplugging it and turn it back on again job done ! SETTING THE LOCAL LATITUDE FOR ACCURATE TRACKING setting the local latitude is not required for the auto tracking telescope to track an astronomical object but it greatly enhances the tracking accuracy. it requires that you know the latitude of your observing site. to set the latitude for the northern hemisphere, use the directional buttons to adjust the telescope tube until the latitude scale reads 0. turn off the power and back on again. now use the hand control to move the telescope tube until the latitude scale reads your local site latitude. press the "fast" and "slow" buttons simultaneously to store the local latitude into the system. setting the local latitude only needs to be done once, the information will be stored in the hand control even when the power is turned off. Yes it can. -
Skywatcher tracking mount help.
Cornelius Varley replied to Steve Reed's topic in Getting Started Equipment Help and Advice
The manual for the Supatrak mount can be found here untitled (opticalvision.co.uk) -
Best place to sell a telescope?
Cornelius Varley replied to ObscuredView's topic in The Astro Lounge
Once you have been a member for 30 days and you have made more than 25 posts you will gain access to the forums buy and sell section. -
Thats how setting circles work. To use the setting circles to find an object in the sky of known RA and DEC value : Align the telescope with a star of known RA and DEC and rotate the setting circles to match those values. With RA and DEC clutches released manually slew the telescope until the RA and DEC values now match those of the new target. Retighten the clutches and continue with clutches engaged and mount driven. The above method is used with manual mounts ie those without goto. If you use this method with a goto mount you will lose goto alignment, unless the mount has dual encoders. Also, setting circles on most mounts are not very accurate.
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Your mount is working as it should. When the RA clutch is locked and the mount rotates on its RA axis the pointer will remain pointed at the same RA value. The mount is tracking a point in the sky which has a constant value. The setting circles on the mount can be ignored because you don't need them with a goto mount. NPE (Non Perpendicular Error) can be ignored.
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Coupling a Nikon DSLR to a newtonian
Cornelius Varley replied to Diver99's topic in Getting Started General Help and Advice
Quick question. The focuser drawtube seems to have a threaded end (m42x0.75?). Can the T2 adaptor attach directly to that, keeping the distance between the camera and focuser as short as possible. -
Coupling a Nikon DSLR to a newtonian
Cornelius Varley replied to Diver99's topic in Getting Started General Help and Advice
A 2x Barlow should be sufficient. Can you upload a few photos of the camera/telescope connection ? -
Coupling a Nikon DSLR to a newtonian
Cornelius Varley replied to Diver99's topic in Getting Started General Help and Advice
Hello and welcome to SGL. The standard Skywatcher 130 newtonians, like many other reflectors, don't have the ability to reach focus with a camera, Skywatcher actually introduced the 130PDS to fix this. The problem can be solved by either using a barlow lens to move the point of focus outwards, or, more drastically, by reducing the distance between the primary and secondary mirrors (not recommended) -
That looks like a classic case of inadequate power to the mount. The "cheap PSU" I assume is an unregulated type and when the mount slews at high speed more amps are drawn than the PSU can supply and it shuts down. The PSU tries to increase the amps but has to reduce the volts below which the mount can operate. This is not unknown. An SGL member was completely adamant that there was nothing wrong with the PSU and there was a problem with the mount, even sending the mount away for checking. The mount was tested for 24hrs and was found to be operating with no problems. The mount was returned and was tried again with the same PSU. The mount failed again. A different PSU was then used and operated as normal. If you can, try to power the mount with a car battery or a better PSU.
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telescope query
Cornelius Varley replied to john willis's topic in Getting Started General Help and Advice
At this point it might be worth mentioning that the OP hasn't visited SGL since March 26, so might you might be talking to yourselves. -
EQ5 Horizontal Mounting
Cornelius Varley replied to Spad's topic in Getting Started Equipment Help and Advice
The orientation of the dovetail plate doesn't matter. What matters is that the telescope is pointing at the NCP at the start of star alignment. -
Please only post in English From the code of conduct: Official Language English is the official language of our forums because it is the common language between our moderators and users. Because we can not moderate post/thread text in a foreign language, you may not post or have a signature in the forums in language other than English.
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Signature line
Cornelius Varley replied to Models By Night's topic in Getting Started General Help and Advice
Probably more than 10. -
Space blanket as a Filter
Cornelius Varley replied to EdwinHubble2023's topic in Getting Started Equipment Help and Advice
Don't even think about it. Only ever use the correct materials designated for use for solar observing. -
Heq5 Black version
Cornelius Varley replied to Lucas1807's topic in Getting Started Equipment Help and Advice
It's still £600 cheaper to upgrade the mount than spend £1052. That £600 can then be spend on the ASIair + other stuff. No questions need begging. -
Heq5 Black version
Cornelius Varley replied to Lucas1807's topic in Getting Started Equipment Help and Advice
The port shown in the photo is the handbox port. I am not aware of an ST4 port on the old mount. -
Heq5 Black version
Cornelius Varley replied to Lucas1807's topic in Getting Started Equipment Help and Advice
I doubt eqmod works with the old dual axis (non synscan) heq5. Probably also the asiair. The synscan upgrade kit costs about £452 https://www.firstlightoptics.com/sky-watcher-mount-accessories/synscan-pro-goto-version-3-upgrade-kit-for-heq5.html -
Quite a low bench mark.
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The plan was to achieve orbital flight and hopefully return in a single piece.
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I guess that wasn't in the plan. If at first you don't succeed throw a few more million on the fire. 🚀🔥
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To access the buy/sell section you need a minimum of 30 days membership and more than 25 relevant posts (ie not posts in the welcome section or non-astro lounge)