Open PHD Guiding

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

To get help with PHD2, please upload your log files - here's how: How to ask for help with PHD2.

If you are new to PHD2, we urge you to read the documentation and follow these tips:

Use the forum search tools - most questions have been answered many times
Read and follow the Best Practices Guide
Use the New-Profile-Wizard to define and manage your equipment configurations
Avoid making changes to guiding parameters without knowing exactly what they do
After you get a good calibration run and a Guiding Assistant Run, per the Best Practices, run the Baseline Assessment

Forum guidelines for vendors.

0 selected

Dewy Frank, … Brian Valente11

May 2

How can this guiding be improved? CEM60 and ASI120MM-mini

Thanks for the update Dewy We appreciate that you took the time to post the fix, so others can

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How can this guiding be improved? CEM60 and ASI120MM-mini

Thanks for the update Dewy We appreciate that you took the time to post the fix, so others can

May 2

May 2

Knowledge question about PPEC algorithm and non-integer harmonics

Hi all, Inspired by suggestions in this group, I went ahead and performed PEC training process on my

unread,

Knowledge question about PPEC algorithm and non-integer harmonics

Hi all, Inspired by suggestions in this group, I went ahead and performed PEC training process on my

May 2

William Ryan, … Brian Valente7

May 2

Question about Failed Comms w/ Mount for Guidepulse

>>> So park and such should work unless something really goes wrong with comms. shhhh,....

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Question about Failed Comms w/ Mount for Guidepulse

>>> So park and such should work unless something really goes wrong with comms. shhhh,....

May 2

Jeff Ratino, mj.w...@gmail.com4

May 2

No longer have an image with ASI290mm

According to the GuideLog, PHD2 Calibrated and guided. Did you try adjusting the gamma slider under

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No longer have an image with ASI290mm

According to the GuideLog, PHD2 Calibrated and guided. Did you try adjusting the gamma slider under

May 2

Howard Maron, … mccom...@gmail.com9

May 2

Using the main Imaging Camera and PHD2 to Assess Need to Guide

I like that. I will need to give that a try. From: open-phd...@googlegroups.com <open-phd-

unread,

Using the main Imaging Camera and PHD2 to Assess Need to Guide

I like that. I will need to give that a try. From: open-phd...@googlegroups.com <open-phd-

May 2

Jim Pollard, Bruce Waddington6

May 2

Spiked guiding all of a sudden

I forgot to mention, I'm sure you'll see it though, I went ahead and installed the latest

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Spiked guiding all of a sudden

I forgot to mention, I'm sure you'll see it though, I went ahead and installed the latest

May 2

Steven Zuhoski, … Bruce Waddington5

May 1

Interrupting PHD2 Logs

Hi Bruce, Thanks for your reply. It took a quick glance at the PHD2 debug log for me to completely

unread,

Interrupting PHD2 Logs

Hi Bruce, Thanks for your reply. It took a quick glance at the PHD2 debug log for me to completely

May 1

Kent Roberts, … Brian Valente4

May 1

New to guiding, are these results reasonable?

Whooops!!! My bad and apologies! On Wednesday, May 1, 2024 at 12:37:34 PM UTC-4 bval...@gmail.com

unread,

New to guiding, are these results reasonable?

Whooops!!! My bad and apologies! On Wednesday, May 1, 2024 at 12:37:34 PM UTC-4 bval...@gmail.com

May 1

Stuart Taylor, … Brian Valente6

Apr 30

How do I arrange the panes?

Hi Stuart >>> seems odd that the star profile and star view are part of the same window. It

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How do I arrange the panes?

Hi Stuart >>> seems odd that the star profile and star view are part of the same window. It

Apr 30

Michael Owen, … mj.w...@gmail.com8

Apr 30

Hi Michael O. Re: your Dithers. A 12 pixel Dither of the imaging camera is 12pixels x 2.33arcsec/

unread,

Hi Michael O. Re: your Dithers. A 12 pixel Dither of the imaging camera is 12pixels x 2.33arcsec/

Apr 30

Santhosh Palani, Brian Valente5

Apr 29

Guide scope and camera selection

Got it, really appreciate your help. On Mon, Apr 29, 2024, 1:30 PM Brian Valente <bvalente@gmail.

unread,

Guide scope and camera selection

Got it, really appreciate your help. On Mon, Apr 29, 2024, 1:30 PM Brian Valente <bvalente@gmail.

Apr 29

Suzanne Beers, … Bryan5

Apr 28

Return home to N. Hemi from S. Hemi guiding is way off

Thank you! On Sun, Apr 28, 2024, 08:45 Bryan <bcas...@gmail.com> wrote: Suzanne The

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Return home to N. Hemi from S. Hemi guiding is way off

Thank you! On Sun, Apr 28, 2024, 08:45 Bryan <bcas...@gmail.com> wrote: Suzanne The

Apr 28

Dewy Frank, bw_m...@earthlink.net3

Apr 26

Why would mount not show up in wizard?

I would say the ASCOM driver for your mount is either absent or mis-installed. PHD2 simply shows a

unread,

Why would mount not show up in wizard?

I would say the ASCOM driver for your mount is either absent or mis-installed. PHD2 simply shows a

Apr 26

macd...@yahoo.com, Bruce Waddington7

Apr 26

Calibration failed, star did not move enough

Thank you again, Bruce. On Wednesday, April 24, 2024 at 9:33:25 PM UTC-5 bw_m...@earthlink.net wrote:

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Calibration failed, star did not move enough

Thank you again, Bruce. On Wednesday, April 24, 2024 at 9:33:25 PM UTC-5 bw_m...@earthlink.net wrote:

Apr 26

John Natale, … mj.w...@gmail.com9

Apr 26

Very faint and blurry stars using OAG and PHD2

Hi John 1. "stars should not be distorted anywhere in the field of view," Perhaps that is

unread,

Very faint and blurry stars using OAG and PHD2

Hi John 1. "stars should not be distorted anywhere in the field of view," Perhaps that is

Apr 26

ROY MIXON, … bw_m...@earthlink.net39

Apr 25

PHD2 Guiding problems, NEWBIE

You control forum notifications yourself, it's in the left-hand column of tabs on the web forum

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PHD2 Guiding problems, NEWBIE

You control forum notifications yourself, it's in the left-hand column of tabs on the web forum

Apr 25

Mark McComiskey, … Bruce Waddington38

Apr 25

Progress and Questions

Fair enough. This is quite the Gremlin. -----Original Message----- From: open-phd-guiding@

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Progress and Questions

Fair enough. This is quite the Gremlin. -----Original Message----- From: open-phd-guiding@

Apr 25

Eric Brotman, … Bruce Waddington3

Apr 23

It looks to me like the guide camera's rotational orientation has changed since you did a

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It looks to me like the guide camera's rotational orientation has changed since you did a

Apr 23

uma...@gmail.com, bw_m...@earthlink.net4

Apr 23

Help with PHD2 guiding in one direction.

16-bit operation is generally preferred unless there's a specific reason to not use it, eg some

unread,

Help with PHD2 guiding in one direction.

16-bit operation is generally preferred unless there's a specific reason to not use it, eg some

Apr 23

Howard Maron, … Bruce Waddington10

Apr 23

Indentifying Differential Flexure

Absolutely NOT snarky! Rather, a great reminder. From: open-phd...@googlegroups.com <open-phd

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Indentifying Differential Flexure

Absolutely NOT snarky! Rather, a great reminder. From: open-phd...@googlegroups.com <open-phd

Apr 23

Gustavo Gomez, Bruce Waddington2

Apr 22

Help in message interpretation

The real conclusion here is that you got a very poor calibration, probably unusable for imaging. You

unread,

Help in message interpretation

The real conclusion here is that you got a very poor calibration, probably unusable for imaging. You

Apr 22

Dale Ouimette, … Brian Valente12

Apr 22

Camera Profile Issues

Good luck Dale, please let us know how it goes On Sun, Apr 21, 2024 at 10:17 PM Dale Ouimette <

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Camera Profile Issues

Good luck Dale, please let us know how it goes On Sun, Apr 21, 2024 at 10:17 PM Dale Ouimette <

Apr 22

Chuck Schreiner, … Bryan32

Apr 22

Rotating main camera after calibration

Bryan, ah! There's the missing piece! Thanks again. Seriously. I really appreciate the help.

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Rotating main camera after calibration

Bryan, ah! There's the missing piece! Thanks again. Seriously. I really appreciate the help.

Apr 22

Eric Giraud, … Brian Valente6

Apr 19

Using the 16bit mode with my 178MC

Thanks, I had discovered that just after my post while trying different things with the software.

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Using the 16bit mode with my 178MC

Thanks, I had discovered that just after my post while trying different things with the software.

Apr 19

Mark McComiskey, … Brian Valente11

Apr 17

Pier Side Reporting Issue

Agreed! Small steps. On Tuesday, April 16, 2024 at 12:19:31 PM UTC-4 bval...@gmail.com wrote: Mark

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Pier Side Reporting Issue

Agreed! Small steps. On Tuesday, April 16, 2024 at 12:19:31 PM UTC-4 bval...@gmail.com wrote: Mark

Apr 17

sar...@gmail.com, … Brian Valente7

Apr 17

Meridian flip with OAG - is there a way?

Great, thanks. I'll try it. On Tue, Apr 16, 2024 at 8:11 PM Brian Valente <bval...@gmail.com

unread,

Meridian flip with OAG - is there a way?

Great, thanks. I'll try it. On Tue, Apr 16, 2024 at 8:11 PM Brian Valente <bval...@gmail.com

Apr 17

Tom Horner, … Brian Valente8

Apr 16

Major polar alignment discrepancy and other PHD2 issues

HI again Tom I think something is fubar on your setup. The corrections aren't showing up because

unread,

Major polar alignment discrepancy and other PHD2 issues

HI again Tom I think something is fubar on your setup. The corrections aren't showing up because

Apr 16

Paul Goelz, … Brian Valente6

Apr 16

Couple questions about PHD2 and the NINA Orbitals plugin

Hi Bruce (apologies, i thought it was Paul) >>>Using NINA Orbitals plugin, I tried setting

unread,

Couple questions about PHD2 and the NINA Orbitals plugin

Hi Bruce (apologies, i thought it was Paul) >>>Using NINA Orbitals plugin, I tried setting

Apr 16

Alexey, Brian Valente4

Apr 16

Will OAG help to fix elongated stars ?

Hi Brian, Thanks for helping with this. > what camera are you using for a guide camera, what's

unread,

Will OAG help to fix elongated stars ?

Hi Brian, Thanks for helping with this. > what camera are you using for a guide camera, what's

Apr 16

Jim Mitzas, Brian Valente6

Apr 15

Guiding issues after meridian flip

Hi Jim can you send a couple pics from different angles of your setup? the 120 second change worked,

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Guiding issues after meridian flip

Hi Jim can you send a couple pics from different angles of your setup? the 120 second change worked,

Apr 15

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