## A brief introduction to the SharpCap Sequencer

Discussions, Bug Reports and Issues related to Beta versions of SharpCap
zerolatitude
Posts: 51
Joined: Mon Mar 01, 2021 5:24 am

### Re: A brief introduction to the SharpCap Sequencer

Hi,

I would like to try out dithering within a sequence.

I do not have any guiding software, so will be using the SC dithering.
File>SharpCap Settings>Guiding>Guiding Application = Dither Only (no guiding)

What I've gathered is that the camera has to be in still mode. Two questions:
1. Should the command Dither every <>sec be within the loop or outside?
2. If I am using SC to dither (and not any guiding software), should the command to capture still frames have REQUIREGUIDING true or false?

My planned sequence is below.

Thanks

SEQUENCE
STILL MODE
SET EXPOSURE TO 15
GUIDING DITHER EVERY 60
LOOP 6 TIMES
MOUNT SOLVEANDSYNC
DELAY 15
CAPTURE 20 FRAMES REQUIREGUIDING False
END LOOP
END SEQUENCE
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Joined: Sat Feb 11, 2017 3:52 pm
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### Re: A brief introduction to the SharpCap Sequencer

Hi,

'GUIDING DITHER EVERY XX' should be outside the loop - running that step sets up a background timer that will trigher the dither to happen every 60 seconds until the timer is stopped using GUIDING DITHER EVERY STOP. Of course the dither doesn't happen exactly every 60 seconds, it happens at the next gap between frames after the 60s timer fires.

REQUIREGUIDING shouldn't matter - if it is set to true then imaging pauses if guiding is lost, but the 'Dither Only (no guiding)' option always reports that guiding is active - basically it pretends that there is a working guiding application.

You will also need to add

GUIDING CONNECT ABORT False

at the start of your sequence (before the dither every step) to get the sequencer talking to the 'guiding'.

cheers,

Robin
zerolatitude
Posts: 51
Joined: Mon Mar 01, 2021 5:24 am

### Re: A brief introduction to the SharpCap Sequencer

Thank you
Gordon
Posts: 6
Joined: Sat Feb 02, 2019 1:45 pm

### Re: A brief introduction to the SharpCap Sequencer

Hi Robin,

First go today, I've selected the Gain Value block but cannot set a value don't know if it's me or not!

I've also not spotted anywhere to set USB speed, is there one?

Cheers

Gordon
Posts: 6610
Joined: Sat Feb 11, 2017 3:52 pm
Location: Vale of the White Horse, UK
Contact:

### Re: A brief introduction to the SharpCap Sequencer

Hi Gordon,

try adjusting the gain block with the camera that you intend to work with open in SharpCap - the problem with gain is that for 99% of cameras it is a number (for instance 100 to 3000), but for a small minority it's something like 'ISO 100' or 'ISO 200'. If the camera is open then SharpCap knows which of these to offer - if there is no camera open you may get stuck in limbo - I will try to fix the limbo problem, but still better to have the camera open as it will then know the minimum/maximum values, etc.

For setting the USB speed, there is a generic 'Set <Control Name> to <Property Value>' - again having the camera open means that the control names will be selectable in the dropdown, rather than having to be typed in.

There is also a block that loads a saved capture profile - that's a good way to set a whole range of camera settings in one go.

cheers,

Robin
sangon
Posts: 3
Joined: Fri Mar 19, 2021 8:44 am

### Re: A brief introduction to the SharpCap Sequencer

Hi Robin

I'm trying to start the PHD guider using the sequencer but I had no success. I attach a picture with the details.
It seems that if PHD is not in Looping state, it fails to start. Whoever, if the PHD is already Looping, it seems to start guiding ok.

Is that the expected behavior? or Am I doing something wrong? Because I'd expect that PHD remains stopped (not looping) until the sequence starts (or it reaches that step).

Thanks
KR
Miguel
Attachments
guide error.JPG (272.77 KiB) Viewed 324 times
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### Re: A brief introduction to the SharpCap Sequencer

Hi,

as far as I can see that should work - to test just the guiding startup you could run this sequence

Code: Select all

SEQUENCE
GUIDING CONNECT ABORT False
GUIDING START
END SEQUENCE

That works for me with PHD setup to use the built in simulator (daylight here, and cloudy, so that is the only way I can check). I do notice that you are using a pre-release (dev3) of PHD 2.6.9 - it would be worth updating to the full release version of 2.6.9 to see if that helps

cheers,

Robin
Capture.JPG (39.84 KiB) Viewed 308 times
Flyingdockp
Posts: 1
Joined: Fri May 21, 2021 7:25 pm

### Re: A brief introduction to the SharpCap Sequencer

Hello,
I'm still waiting for the clouds to dissapear, struggling with this beautiful sequencer to get it make sense to me.

I'm very interested in the live stack possibilities, that's also the topic of my question.

So, the sequencer routine can only be programmed when a camera is connected, but unfortunately, the simulator cams seem to be limited in their possiblities.(no cooling, no gain settings). This makes toying around a bit more difficult, but I'll manage.

Then there is the sequencer. The sequencer is a very nice starting point. Unfortunately, it is only for still images. So, being an absolute beginner, I'd love to be able to also 'sequence' live stacking in the sequencer, eeehm, being able to set up a simple run just from the sequence planner.
So, that would include 'take 20 exposures, save as ..., ' dither, start again and repeat for x sequences.

Yes I know, most of these things are already possible. ANyway.
Looking at all settings, I can only find options to set dithering after x seconds. For this, it might be handy to be able to dither after x exposures. Is it possible to set that as well?

ANd finally... as a beginner... oooo I'd love a sort of example of how to program this...

regards, KP
Tiago Ferreira
Posts: 33
Joined: Sun Mar 21, 2021 10:50 pm

### Re: A brief introduction to the SharpCap Sequencer

Flyingdockp wrote: Fri May 21, 2021 7:43 pm Hello,
I'm still waiting for the clouds to dissapear, struggling with this beautiful sequencer to get it make sense to me.

I'm very interested in the live stack possibilities, that's also the topic of my question.

So, the sequencer routine can only be programmed when a camera is connected, but unfortunately, the simulator cams seem to be limited in their possiblities.(no cooling, no gain settings). This makes toying around a bit more difficult, but I'll manage.

Then there is the sequencer. The sequencer is a very nice starting point. Unfortunately, it is only for still images. So, being an absolute beginner, I'd love to be able to also 'sequence' live stacking in the sequencer, eeehm, being able to set up a simple run just from the sequence planner.
So, that would include 'take 20 exposures, save as ..., ' dither, start again and repeat for x sequences.

Yes I know, most of these things are already possible. ANyway.
Looking at all settings, I can only find options to set dithering after x seconds. For this, it might be handy to be able to dither after x exposures. Is it possible to set that as well?

ANd finally... as a beginner... oooo I'd love a sort of example of how to program this...

regards, KP
I've recorded a video with my experience with the sequencer and how i built my main sequences step by step. I hope this help:

viewtopic.php?f=35&t=4134

GSO 12" 1500 f/5 Dobson on Geoptik Eartha Eq Platform

ZWO ASI224MC + ZWO ASI294MC
Posts: 6610
Joined: Sat Feb 11, 2017 3:52 pm
Location: Vale of the White Horse, UK
Contact:

### Re: A brief introduction to the SharpCap Sequencer

Flyingdockp wrote: Fri May 21, 2021 7:43 pm Hello,
I'm still waiting for the clouds to dissapear, struggling with this beautiful sequencer to get it make sense to me.

I'm very interested in the live stack possibilities, that's also the topic of my question.

So, the sequencer routine can only be programmed when a camera is connected, but unfortunately, the simulator cams seem to be limited in their possiblities.(no cooling, no gain settings). This makes toying around a bit more difficult, but I'll manage.

Then there is the sequencer. The sequencer is a very nice starting point. Unfortunately, it is only for still images. So, being an absolute beginner, I'd love to be able to also 'sequence' live stacking in the sequencer, eeehm, being able to set up a simple run just from the sequence planner.
So, that would include 'take 20 exposures, save as ..., ' dither, start again and repeat for x sequences.

Yes I know, most of these things are already possible. ANyway.
Looking at all settings, I can only find options to set dithering after x seconds. For this, it might be handy to be able to dither after x exposures. Is it possible to set that as well?

ANd finally... as a beginner... oooo I'd love a sort of example of how to program this...

regards, KP
Hi KP,

I've been working on the documentation for using both the sequence planner and the main sequence editor over the last week or so. Hopefully once that's available (within the next week or two) the learning curve for getting started won't be quite as steep. I will certainly include some examples to help people get started.

The sequence planner does require a camera to be connected and as you've noticed it's for still captures only. In the future there might be separate sequence planners for video captures the moon or planets or even 1 to help plan and EAA session, but those will happen later.

The main sequence editor can be used for both video capture and for running live stacking. You'll find the live stacking related steps in the processing tab of the available steps area.

At the moment there isn't a way to do dithering based on the number of frames. It's definitely something I want to add in future, but it's a big enough change that I'm going to leave it until the first full release of SharpCap 4.0 is completed rather than try to squeeze it in before then.

Cheers, Robin