Open PHD Guiding

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Welcome to the discussion forum for Open PHD Guiding (PHD2), a telescope guiding software application for astro-photographers.

PHD2 users can post questions here about troubleshooting guiding problems or problems with PHD2. We also welcome ideas and suggestions for improving PHD2, and discussions about PHD2 development.

If you are looking for help with PHD2, please read How to ask for help with PHD2.

Forum guidelines for vendors.

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Chris, bw_msgboard4

5:53 PM

Horrible guiding results. Please help :)

I also realized that my guide speeds were set the to default 0.1x sidereel in EQMOD. That would

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Horrible guiding results. Please help :)

I also realized that my guide speeds were set the to default 0.1x sidereel in EQMOD. That would

5:53 PM

Glenn Newell, bw_msgboard4

5:31 PM

drastic difference in guiding

Ok, sorry, I can't find anything in the log that matches this pattern. Here's the view from

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drastic difference in guiding

Ok, sorry, I can't find anything in the log that matches this pattern. Here's the view from

5:31 PM

Steve Elliott, bw_msgboard3

1:50 AM

Disturbance in DEC

Thanks Bruce, I know I have a problem with DEC which I'm working on. I'm waiting for some new

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Disturbance in DEC

Thanks Bruce, I know I have a problem with DEC which I'm working on. I'm waiting for some new

1:50 AM

Edward Moore, Brian Valente16

Sep 24

Dec axis not moving?

I think it was pointing at Mizar or Deneb when it decided to all play nicely together. On Friday,

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Dec axis not moving?

I think it was pointing at Mizar or Deneb when it decided to all play nicely together. On Friday,

Sep 24

Jens Haselhuhn, wave...@talktalk.net3

Sep 24

Celestron CGE PRO / Setup

Hello Jens, Yes, use the Serial port and get a Serial to USB adapter cable to connect the mount to a

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Celestron CGE PRO / Setup

Hello Jens, Yes, use the Serial port and get a Serial to USB adapter cable to connect the mount to a

Sep 24

Scott Badger, bw_msgboard5

Sep 22

Dealing with backlash and wind

Here's the link to the logs https://openphdguiding.org/logs/dl/PHD2_logs_8SKL.zip. Regarding the

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Dealing with backlash and wind

Here's the link to the logs https://openphdguiding.org/logs/dl/PHD2_logs_8SKL.zip. Regarding the

Sep 22

Chuck Koos, Brian Valente4

Sep 22

Guiding looks OK, or can I improve it?

"have you checked out this resource? it covers how to analyze PHD2 guiding results https://

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Guiding looks OK, or can I improve it?

"have you checked out this resource? it covers how to analyze PHD2 guiding results https://

Sep 22

Paul E Mongillo, bw_msgboard2

Sep 21

Can't Complete Calibration iOptron CEM26

Sorry Paul, we only support the official version of PHD2. The ASAIR product is not so much a "

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Can't Complete Calibration iOptron CEM26

Sorry Paul, we only support the official version of PHD2. The ASAIR product is not so much a "

Sep 21

Alexey, … Bruce Waddington15

Sep 21

Guiding problems with iOptron CEM26

> Hi again. Sorry to keep sending you comments on this, but I keep thinking about it. I'm

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Guiding problems with iOptron CEM26

> Hi again. Sorry to keep sending you comments on this, but I keep thinking about it. I'm

Sep 21

Eric Esch, bw_msgboard2

Sep 19

PHD guide while slewing

I would say your problem is probably with the ASCOM driver - not too surprising if that's the big

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PHD guide while slewing

I would say your problem is probably with the ASCOM driver - not too surprising if that's the big

Sep 19

steve west, … Brian Valente4

Sep 19

Thanks everybody, appreciate your time and information. Cheers. On Friday, September 17, 2021 at 11:

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Thanks everybody, appreciate your time and information. Cheers. On Friday, September 17, 2021 at 11:

Sep 19

Rob lewis, … Brian Valente4

Sep 17

PHD2 log viewer

I think i found the issue...I used a log file from a user and it worked fine...i think what has

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PHD2 log viewer

I think i found the issue...I used a log file from a user and it worked fine...i think what has

Sep 17

Jeff Sauck, Bruce Waddington4

Sep 16

Guiding Issue with EQ6-R Pro

Hi Bruce, No worries thanks so much for the reply! I have been somewhat concerned about the

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Guiding Issue with EQ6-R Pro

Hi Bruce, No worries thanks so much for the reply! I have been somewhat concerned about the

Sep 16

Eric Brotman, … bw_msgboard3

Sep 16

trouble guiding declination error

Have you read the manual? There's quite a large section there explaining how calibration works

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trouble guiding declination error

Have you read the manual? There's quite a large section there explaining how calibration works

Sep 16

Don Anderson, … bw_msgboard4

Sep 16

Selecting camera in PHD2 Setup

The StarlightXPress folks have a unified driver for their cameras, and it's the one labelled as

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Selecting camera in PHD2 Setup

The StarlightXPress folks have a unified driver for their cameras, and it's the one labelled as

Sep 16

Paul Patterson, … bw_msgboard6

Sep 16

Periodic huge dither

Thanks Bruce. I'll employ those tools next clear night at Meridian and equator and see if it

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Periodic huge dither

Thanks Bruce. I'll employ those tools next clear night at Meridian and equator and see if it

Sep 16

Giacomo Di Mase, George Shoup4

Sep 15

Declination excursions on AVX mount

I have a C11 scope and G11 mount with a 0.7 reducer and a zwo 2600 camera. This makes for a long

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Declination excursions on AVX mount

I have a C11 scope and G11 mount with a 0.7 reducer and a zwo 2600 camera. This makes for a long

Sep 15

Andluc, … Brian Valente6

Sep 15

PHD2 and encoder mounts ( AP MACH2) best settings and algorithm

Forget my comment on Correction magnitude: I've seen the log and it makes sense. I don't know

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PHD2 and encoder mounts ( AP MACH2) best settings and algorithm

Forget my comment on Correction magnitude: I've seen the log and it makes sense. I don't know

Sep 15

John Deans, … Brian Valente6

Sep 14

Quirky Guiding or a basic error on my part?

Hi John it's hard to respond meaningfully to a question without some data. If you have a few

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Quirky Guiding or a basic error on my part?

Hi John it's hard to respond meaningfully to a question without some data. If you have a few

Sep 14

Maxastro59, … bw_msgboard7

Sep 14

PHD2 and CCD Commander

Many thanks for your nice support. Massimo Il giorno 14 set 2021, alle ore 17:20, bw_msgboard <

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PHD2 and CCD Commander

Many thanks for your nice support. Massimo Il giorno 14 set 2021, alle ore 17:20, bw_msgboard <

Sep 14

Dale Wilson, … Carlos Tortolini10

Sep 14

CGX not responding to phd2 calibration, using ascom celestron drivers.

Thank you all for the help. I'll let you know how it goes. On Monday, September 13, 2021 at 7:56:

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CGX not responding to phd2 calibration, using ascom celestron drivers.

Thank you all for the help. I'll let you know how it goes. On Monday, September 13, 2021 at 7:56:

Sep 14

mike Shuter, David Kerber2

Sep 14

Suitable Guide Camera

It's hard to know if it's going to be suitable without knowing how sensitive it is. If it

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Suitable Guide Camera

It's hard to know if it's going to be suitable without knowing how sensitive it is. If it

Sep 14

Michael O'Brien, bw_msgboard2

Sep 14

Camera disconnecting unless win priorities changed!

Hi Michael. There's really not anything we can do about this. I would say your laptop is barely

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Camera disconnecting unless win priorities changed!

Hi Michael. There's really not anything we can do about this. I would say your laptop is barely

Sep 14

Stewart Tansley, bw_msgboard5

Sep 13

CGX - frequent elongated stars in RA, 2" vs DEC 0.5"

Super-helpful analysis and guidance, very very kind of you, thank you Bruce! Celestron is a good

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CGX - frequent elongated stars in RA, 2" vs DEC 0.5"

Super-helpful analysis and guidance, very very kind of you, thank you Bruce! Celestron is a good

Sep 13

Dave Cotterell, Brian Valente2

Sep 13

PHD2 + Stellar Cat - Dob-mounted 20-inch scope - can I do it?

Hi Dave technically you could get PHD working, but your alt az mount imaging will suffer from field

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PHD2 + Stellar Cat - Dob-mounted 20-inch scope - can I do it?

Hi Dave technically you could get PHD working, but your alt az mount imaging will suffer from field

Sep 13

Tony Sturchio, … bw_msgboard8

Sep 13

Can someone spot my problem please

Hi Brian, I only adjusted the mesh on the worm according to the video. I know it is fine. What is

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Can someone spot my problem please

Hi Brian, I only adjusted the mesh on the worm according to the video. I know it is fine. What is

Sep 13

Optique video, bw_msgboard8

Sep 13

start guiding button won't turn green

I found the error, I had to change an option in advanced settings, since im not using any go-to mount

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start guiding button won't turn green

I found the error, I had to change an option in advanced settings, since im not using any go-to mount

Sep 13

Sep 12

Pulse Guide to Command has failed

The last two nights I have attempted to use PHD2 I have been receiving the message "Pulse Guide

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Pulse Guide to Command has failed

The last two nights I have attempted to use PHD2 I have been receiving the message "Pulse Guide

Sep 12

charles jacobson, bw_msgboard4

Sep 12

strange ascom error message while guiding with latest phd 2, sgp and astrophysics ascom drivere

It looks like you've posted the wrong log files. Your original post was on September 9 but the

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strange ascom error message while guiding with latest phd 2, sgp and astrophysics ascom drivere

It looks like you've posted the wrong log files. Your original post was on September 9 but the

Sep 12

omega.c...@gmail.com, bw_msgboard2

Sep 12

Auto exposure and settings

The various controls that affect star selection are explained in the manual: https://openphdguiding.

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Auto exposure and settings

The various controls that affect star selection are explained in the manual: https://openphdguiding.

Sep 12

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