Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

How to begin my first Exoplanet observation

  • Please log in to reply
27 replies to this topic

#1 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 04 January 2024 - 10:40 AM

Where to find confirmed candidates?

 

I welcome any other useful information, thanks!

 

Steve


  • nawillia likes this

#2 pbealo

pbealo

    Apollo

  • *****
  • Posts: 1,410
  • Joined: 12 Oct 2006
  • Loc: New Hampshire

Posted 04 January 2024 - 10:54 AM

Swathemore:  https://astro.swarthmore.edu/transits/

 

NASA:  https://exoplanets.n...latest-targets/

 

But read this:  https://www.aavso.or...al Rev. 1.1.pdf

 

Peter B

 

PS: I have useless info as well!


  • SeymoreStars and ziggeman like this

#3 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 04 January 2024 - 01:14 PM

Swathemore:  https://astro.swarthmore.edu/transits/

 

NASA:  https://exoplanets.n...latest-targets/

 

But read this:  https://www.aavso.or...al Rev. 1.1.pdf

 

Peter B

 

PS: I have useless info as well!

Thank you and thank you for NOT posting useless info LOL ;-)

 

Will you be at NEAF this April?

 

Steve



#4 nawillia

nawillia

    Lift Off

  • *****
  • Posts: 17
  • Joined: 09 Jun 2017

Posted 04 January 2024 - 01:18 PM

This is an astronomy goal of mine this year, these resources look really helpful.


Edited by nawillia, 05 January 2024 - 12:57 PM.


#5 rgsalinger

rgsalinger

    James Webb Space Telescope

  • *****
  • Posts: 15,908
  • Joined: 19 Feb 2007
  • Loc: Carlsbad Ca

Posted 04 January 2024 - 01:53 PM

I do some exoplanets using NINA for taking the images. NINA has a very useful plugin for Exos. It might be a stretch to suggest perhaps changing your imaging software, so apology for that.  I just found the plugin to be really useful. There's a youtube video around about how to use it. Again, apologies if this is too much of a change for the OP. 

 

Rgrds-Ross


  • SeymoreStars and pvdv like this

#6 Hubert

Hubert

    Messenger

  • -----
  • Posts: 412
  • Joined: 26 Sep 2006
  • Loc: Belgium

Posted 05 January 2024 - 12:50 AM

https://www.exoclock.space/project


  • SeymoreStars and Xilman like this

#7 pbealo

pbealo

    Apollo

  • *****
  • Posts: 1,410
  • Joined: 12 Oct 2006
  • Loc: New Hampshire

Posted 05 January 2024 - 07:00 AM

Thank you and thank you for NOT posting useless info LOL ;-)

 

Will you be at NEAF this April?

 

Steve

Between traveling to TX for the eclipse and my son's wedding later in April, I'm giving it a pass this year. I'll be at Stellafane this summer though!

Peter


  • SeymoreStars likes this

#8 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 06 January 2024 - 07:39 PM

The swarthmore website is the place to go. You can set so many criteria to find exactly what you want. For starters look for transits that are brighter (mag 9 or brighter, for example), that have a very deep drop in the curve (it even draws a neat little light curve so you can tell quickly) and are complete in less than 2 hours (so you don't have to wait all night). That is what I did on my first few. Also choose ones that are higher in the sky and do not cross the meridian. There is a surprisingly high number that will satisfy all these criteria.


  • SeymoreStars likes this

#9 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 14 January 2024 - 05:04 PM

So this all looks good to me. Am I overlooking, missing something?

 

I will be using a CDK 17 with V filter, at 14mag it should be bright enough. Thoughts?

 

My mount can track through the meridian. I will also try no delay.

 

Thanks

Steve

Attached Thumbnails

  • qatar-9_b.png

Edited by SeymoreStars, 14 January 2024 - 05:20 PM.


#10 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 14 January 2024 - 05:32 PM

So this all looks good to me. Am I overlooking, missing something?

 

I will be using a CDK 17 with V filter, at 14mag it should be bright enough. Thoughts?

 

My mount can track through the meridian. I will also try no delay.

 

Thanks

Steve

All the parameters look pretty good.  And I haven't used any type of filter so not sure how much more difficult that will make it.  I was going to say that Mag 14 might be difficult to start with but I just checked and I caught Wasp-135b (M13.2) and Qatar-1b (M12.7) pretty easily with my C8.
Good luck!


  • SeymoreStars likes this

#11 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 15 January 2024 - 01:39 PM

The data was captured and looks good. 144 - 90 second images, none were garbage. There was no delay other than the download time between images. 

 

Imaging time spanned was 3 hrs and 45 minutes.

 

The Flats, Darks and Bias' were created this morning. I am busy today and need to review Dennis' documentation and place the apertures before proceeding to the next step.


Edited by SeymoreStars, 15 January 2024 - 01:44 PM.


#12 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 15 January 2024 - 03:06 PM

I don't know if you have seen it yet but this video was incredibly helpful in figuring out how to process the data in AIJ.

https://www.youtube....h?v=GW--rE5O-c8


  • SeymoreStars likes this

#13 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 15 January 2024 - 10:17 PM

Thanks Dave I have watched that video more times then I can recall. I had to follow every step of the way with my own data or it did not make a lot of sense. What helped me immensely was your examples, on the shoulders of giants as they say.

 

My exposures were 90 seconds long, using the V filter, and the ADU counts of Qatar9b were only ~ 3500. 

 

Thanks!

Steve

Attached Thumbnails

  • Qatar9b_exoplanet_plot.png

Edited by SeymoreStars, 15 January 2024 - 10:42 PM.

  • descott12 and chrononaut67 like this

#14 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 15 January 2024 - 10:40 PM

I am signed up for Dr Conti's February AAVSO Exoplanet class , so I had to get my act together.

 

Using a V filter might have been a mistake. BTW "V" stands for visual and is basically green.

 

Qatar9b is a K-type star which is orange, so a red filter might have been better.


Edited by SeymoreStars, 15 January 2024 - 10:56 PM.


#15 pvdv

pvdv

    Vostok 1

  • -----
  • Posts: 187
  • Joined: 06 Mar 2022

Posted 16 January 2024 - 07:38 AM

Thanks Dave I have watched that video more times then I can recall. I had to follow every step of the way with my own data or it did not make a lot of sense. What helped me immensely was your examples, on the shoulders of giants as they say.

 

My exposures were 90 seconds long, using the V filter, and the ADU counts of Qatar9b were only ~ 3500. 

 

Thanks!

Steve

Nice! The transit is clearly visible. ADU's are indeed very, very low. Reaching +/-30000 ADUs with that scope and filter combination seems to be impossible in practice. Well, you could expose for 600 or 900 seconds I guess, but you will lose a lot on the timing precision.

Now, have AIJ perform a fit on that data. Despite the low ADU count, by the look of it, it should fit nicely.


  • SeymoreStars likes this

#16 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 16 January 2024 - 10:48 AM

Thanks pvdv here's what AIJ plotted based upon this tutorial - https://www.youtube....h?v=GW--rE5O-c8

 

Attached Thumbnails

  • Qatar9b_Measurements.png

  • pvdv likes this

#17 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 16 January 2024 - 11:48 AM

Looks great! Pretty amazing that we can do this with amateur gear!


  • SeymoreStars likes this

#18 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 16 January 2024 - 12:33 PM

Looks great! Pretty amazing that we can do this with amateur gear!

Dave have you joined the TESS TFOP SG1 WG?

 

Have you taken or plan to take the AAVSO Exoplanet course offer next month?

 

Steve



#19 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 20 January 2024 - 04:58 PM

Screwed everything up and had to revert to all AIJ defaults. Good way to learn. Then did a little more refining, here's the result.

 

Still don't know how to graph the Airmass.

 

Steve

Attached Thumbnails

  • Screenshot 2024-01-20 164900.png


#20 pvdv

pvdv

    Vostok 1

  • -----
  • Posts: 187
  • Joined: 06 Mar 2022

Posted 20 January 2024 - 05:34 PM

Should be available as a choice - easy to miss as there is an overload of options

airmass


#21 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 20 January 2024 - 06:54 PM

Dave have you joined the TESS TFOP SG1 WG?

 

Have you taken or plan to take the AAVSO Exoplanet course offer next month?

 

Steve

Hi Steve,

I have not jointed that group - actually was not aware of it. I would like to take the exoplanet course so I think I will check into that. Thanks for bringing that to my attention.


  • SeymoreStars likes this

#22 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 20 January 2024 - 08:59 PM

Hi Steve,

I have not jointed that group - actually was not aware of it. I would like to take the exoplanet course so I think I will check into that. Thanks for bringing that to my attention.

Link for the TESS follow-up group - https://tess.mit.edu...pply-join-tfop/

 

Only 3 spots left in Dr. Conti's exoplanet course - https://www.aavso.org/product/138



#23 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 20 January 2024 - 09:08 PM

 

Should be available as a choice - easy to miss as there is an overload of options
 

 

Here's the Airmass, thanks pvdv.

Attached Thumbnails

  • Screenshot 2024-01-20 210719.png

  • rgsalinger and pvdv like this

#24 descott12

descott12

    Soyuz

  • *****
  • Posts: 3,933
  • Joined: 28 Sep 2018
  • Loc: Charlotte, NC

Posted 22 January 2024 - 11:22 AM

Link for the TESS follow-up group - https://tess.mit.edu...pply-join-tfop/

 

Only 3 spots left in Dr. Conti's exoplanet course - https://www.aavso.org/product/138

I just signed up. 


  • SeymoreStars likes this

#25 SeymoreStars

SeymoreStars

    Skylab

  • *****
  • topic starter
  • Posts: 4,374
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 22 January 2024 - 11:40 AM

I just signed up. 

Excellent, it should be fun. We have a good head start.

 

Be sure to read his guide if you haven't already - https://astrodennis.com/Guide.pdf




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics