Meeting Location

Our meetings are currently held at the Timberglen Branch Library in North Dallas on Midway just North of Frankford.

Click here for a map
http://maps.google.com/maps?hl=en&ie=UTF-8&q=timberglen+library+dallas&fb=1&split=1&gl=us&cid=9634653566351524129&li=lmd

Thursday, March 27, 2014

April APSIG Meeting

Hey APSIG gang!

Please join us at the Timberglen Library Tuesday, April 1st from 6-8pm for our monthly APSIG meeting.

This month David Wilson will be our speaker. David will talk about successes and pitfalls he has encountered in the last 7 years pertaining to DSLR astrophotography.

Don't forget to bring your raw image data to pass to Dave Raphael for the image data quality analysis presentation. 

Don't forget your images for show-n-tell!

-George

Friday, February 28, 2014

March APSIG Meeting

Hey APSIG gang!

Please join us at the Timberglen Library Tuesday, March 4th from 6-8pm for our monthly APSIG meeting.

This month Frank Castanho will be our speaker. Below is his description of topics he plans to cover.

CCDStack is a program designed specifically for image calibration ,

It has some nice features like
Data Rejection
DDP - Digital Development Processing,
De-convolution.
Automatic Image Registration

Data rejection features are useful for removing star blooms ,satellite trails, hot and cold pixels etc , it lets you keep frames that would normally be discarded.

DDP is useful for evaluating the image content by automatically doing automatic curves or dynamic range compression, useful for evaluating images before fully processed

De-convolution is useful for sharpening image features and reducing star size.

I plan on giving a brief power point presentation, followed by a demo of processing an image in CCDStack, and if time is available showing some video excepts from Adam Blocks CCDStack tutorial

Don't forget to bring your raw image data to pass to Dave Raphael for the image data quality analysis presentation.

Don't forget your images for show-n-tell!

I will be out of town for this meeting and David Pearson will coordinate the meeting.

March 4th. is voting day. There will be voting at the Library. I have contacted the Library an they have said that the voting will take place in the classroom across the hall from where our meeting normally takes place. Our meeting location is unchanged.

-George

Tuesday, January 28, 2014

February 2014 Meeting

Please join us at the Timberglen Library Tuesday, Feb. 4th from 6-8pm for our monthly APSIG meeting.

There were several request for an equipment/hardware show-and-tell theme meeting during our recent discussions. So, lets have that meeting next week. APSIG members are asked to bring one or two pieces of equipment that they find useful and believe that other APSIG members might find useful. We can either take turns describing the equipment and answering questions or do it all in parallel. When you decide the equipment you plan to bring, please post a message on this forum so that other APSIG members will know what they can expect to see.

At the start of the meeting there are a few issues left over from last meeting we might revisit to reach closure on.

Don't forget to bring your raw image data to pass to Dave Raphael for the image data quality analysis presentation.

Don't forget your images for show-n-tell!

I plan to arrive a little early and attempt to calibrate the projector. Anyone interested in helping with this activity is welcome.

See you there!

Tuesday, November 5, 2013

November Meeting - 11/5/2013

Sequence Generator Pro!
 
Ever wished you could automate your imaging sessions without breaking the bank?  Come learn about Sequence Generator Pro from MainSequence Software.  APSIG member David Pearson will show how he uses it to plan mosaics, integrate guiding, use plate-solving and combine many useful features that maximize photon collection time!

http://www.mainsequencesoftware.com/ 
 
Timberglen Library - 6-8pm 11/5/2013


Wednesday, October 30, 2013

August 2013 Meeting


Watch JOhn Davis' Photoshop processing tips presentation from our August 2013 meeting here:

Photoshop Processing Tips



Sunday, April 1, 2012

March 2012 Meeting

Our March 2012 meeting "focused" on a continuing challenge for all imagers...getting great focus!

We covered both the mechanics and optics of focusing as well as attempted a live focusing demo with an artificial star (despite the fact we couldn't turn the room lights off!)

JOhn Davis gave a great presentation on automated focusing using FocusMax.

Also, we had some great images shared by APSIG members.

You can find a link to the meeting presentation here

Some of the focusing videos are included below.

Bahtinov Focus Mask

video

Planetary
video





Saturday, March 31, 2012

February 2012 Meeting













The March 2012 meeting of APSIG ventured into new territory with a live videoconference presentation by Nightscape photographer Robert Arn.

Robert gave a great talk on his amazing nightscape techniques, and we gained some insight into how we might continue to bring in 'virtual' speakers in the future.










A good turnout for our long-distance presenter.  View Robert's amazing work at astroarn.com

Robert's presentation can be found here.


 
We also got the chance to express our thanks to APSIG Chair Emeritus JOhn Davis.  JOhn has spent many hours over the last couple of years establishing this group and creating a fantastic program.  Thanks JOhn!