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Re: Problem, G11 Gemini 2 cold start & GOTO
On Wed, Dec 11, 2024 at 10:39 AM, <bobthorpe@...> wrote:
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No, you are not correct.??Polaris is NOT the North Celestial Pole and Gemini knows Polaris is not the North Celestial Pole.? But Gemini has a "perfect" default model and will attempt to GOTO Polaris which it likely cannot find because you have not done an accurate mechanical RA polar alignment before hand.? ? ?
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By doing what you are doing instead of the correct routine of mount head leveling, mechanical RA axis polar alignment using polar scope, Polemaster or other camera based PA routine, then doing at least a 2-3 star alignment AKA "model building" in Losmandy speak you are not going to have much success with GOTOs.? By randomly syncing Gemini following your routine you are setting yourself up for failure.? ?
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Start with Losmandy's basic setup videos they will help you to learn the basic setup routines to be successful with a Losmandy Gemini powered mount.?
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After you have reviewed the Losmandy videos, practiced a bunch in daylight get back to us with any questions you have.??
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Chip Louie Chief Daydreamer Imagination Hardware? Astrospheric - South Pasadena, CA? |
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Re: New CR2354 Battery Is At 2.066V by HC and Gemini2 Web Server
On Wed, Dec 11, 2024 at 05:01 PM, Kevin Hannon wrote:
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Hi Kevin,
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How did you check the battery voltage?? The standard measurement method of a coin cell is out of circuit, in other words the battery should be removed from the battery holder to get an accurate measurement.? If you have a recently calibrated DMM and the battery is reading 3.2v this sounds like a nearly new battery and it seem like this is not the source of your voltage reading error.?
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You could try the HGM reset trick I posted and see if this fixes your incorrect battery voltage reading.? But if the low battery voltage display doesn't impact anything maybe don't mess with it until you see other strange behaviors.? ?
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Chip Louie Chief Daydreamer Imagination Hardware? Astrospheric - South Pasadena, CA? |
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Re: New CR2354 Battery Is At 2.066V by HC and Gemini2 Web Server
On Wed, Dec 11, 2024 at 08:01 PM, Kevin Hannon wrote:
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The voltage can differ when the battery is measured stand-alone, and in-circuit, inserted into Gemini.
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Since you have one of the older Gemini models, you may need to replace the battery and then set the date/time immediately after doing so to avoid the battery being discharged too rapidly. This is not an issue with newer Gemini-2's, but was a problem with earlier models.
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(first warning on that page):
After replacing the battery, power on the Gemini-2 and set the time and date. Failure to do so could cause the processor to draw too much power from the battery and might result in processor damage.? You can also save all your settings using the Web interface Firmware/SRAM page "Store SRAM" content to file before removing the battery, and then "Load SRAM" content from file (to restore all the setting back to what they were before changing the battery), after you replace the battery..? This will not set the date and time, you still must do this!.
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Re: New CR2354 Battery Is At 2.066V by HC and Gemini2 Web Server
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Hmm,?
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Have you tried doing an HGM reset then pulling out the battery and letting it sit 10 minutes before powering it up and then installing the battery with the Gemini 2 still powered up???
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Chip Louie Chief Daydreamer Imagination Hardware? Astrospheric - South Pasadena, CA? |
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New CR2354 Battery Is At 2.066V by HC and Gemini2 Web Server
HC says battery on main board is low. Gemini web server says battery at 2.066 volts. Mount is operating normally. I checked the battery with volt meter and it reads 3.2volts. Been a while since I updated the HC and mainboard. Using GM8 with the tall mainboard. Pls advise.? |
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Re: Problem, G11 Gemini 2 cold start & GOTO
Polaris is not exactly at the North pole (i.e., not at the CWD position) but close. What's more, the pole itself is a mathematical singularity: the RA coordinate of the pole is undefined. Stay well clear of the pole or Polaris when doing syncs or aligns because of it.
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Regards,
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? -Paul
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On Wed, Dec 11, 2024 at 01:39 PM, <bobthorpe@...> wrote:
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Re: New Gemini L6.1 and Hand Controller v1.63 firmware available!
Hi Ryan,
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The two checkboxes simply enable meridian flip point functionality or turn it off for each side of the mount. When it's off, Gemini behaves just like it did prior to L6.
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Flip points are similar to the old Western Goto Limit. They attempt to enforce a flip when a Goto is commanded to a position past the flip point.
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The differences between WGL and flip points are:
1. Flip points are set relative to the meridian, not safety limit
2. Flip points can be defined on both sides of the mount, East and West
3. Flip points are meant for imagers: a Goto to a coordinate past the flip point will enforce a meridian flip on either side of the mount, as long as that position is reachable from the other side after the flip.
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The Western Goto Limit was defined relative to the safety limit, and Gemini could decide not do a meridian flip in some cases, if the destination was close enough to the current position and prior to the safety limit. This was designed to help visual observers. Flip points are designed primarily for automated imaging.
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Regards,
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On Wed, Dec 11, 2024 at 10:03 AM, Ryan Noonan wrote:
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Re: New Gemini L6.1 and Hand Controller v1.63 firmware available!
Paul,?
Do you mind a giving a 30 second explanation to the flip point configuration on the upgraded web interface with 6.1? There are some new fields here: -Eastern Meridian Flip Point Distance -Western Meridian Flip Point Distance
and two check boxes...? -Use Eastern Meridian Flip Point -Use Western Meridian Flip Point The screen capture above is from my web interface right after upgrading to 6.1 and without changing anything. I have switched telescopes with new safety limits and I want to make sure that everything is configured correctly. Thank you in advance, Ryan Noonan |
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Re: Gemini Firmware L6.02 released!
It¡¯s available for use, but the trick is figuring out the time difference between Gemini oscillator and 12MHz so that the clock rate adjustment can be made. That part is still being researched and tested. The effect of the clock difference is a relatively minor speed drift vs. Sidereal (or other rates).
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Regards,
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? ?-Paul
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On Tue, Dec 10, 2024 at 11:58 AM, Allen Ruckle wrote:
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Re: New Gemini L6.1 and Hand Controller v1.63 firmware available!
The GFU app pulls the latest available firmware versions from the web by accessing gemini-2.com website. If your internet is disconnected or very slow, it's possible that the firmware versions listed will be older ones, those that were available when that GFU version was first created.?
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Please check the version you're installing before pressing start when using GFU.
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Regards,
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? -Paul
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On Tue, Dec 10, 2024 at 07:23 AM, Phil Jones wrote:
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Chip Louie
Paul Kanevsky
Kevin Hannon
Ryan Noonan