My first detection of an exoplanet (previously known), 



    
        

            Stefan Nebl

My first detection of an exoplanet (previously known)

My first detection of an exoplanet (previously known), 



    
        

            Stefan Nebl

My first detection of an exoplanet (previously known)

Equipment

Imaging Telescopes Or Lenses
Sharpstar 15028HNT
Imaging Cameras
ZWO ASI183MM-Pro
Mounts
Skywatcher NEQ6 Pro Goto
Filters
Optolong L 36mm
Accessories
ZWO EWF 7 · ZWO EAF
Software
PHD2 Guiding · PixInsight · AstroImageJ · Seqence Generator Pro · firecapture
Guiding Telescopes Or Lenses
ZWO F/4 MINI GUIDE SCOPE
Guiding Cameras
ASI ZWO 120MM-S

Acquisition details

Basic astrometry details

Astrometry.net job: 4250347

Resolution: 1560x1020

Data source: Backyard

Description

Not precisely astrophotography, but I still think it's worth a share 🙂

Last night I detected my first (previously known) exoplanet! I did this by the tried-and-true transit method - measuring a characteristic decrease in stellar flux as the exoplanet transits within the line of sight of us and its host star.

By fitting the data to a model we can derive the measured transit duration, beginning, middle, and endpoints, as well as the change in magnitude (dimming). I was pleased to see that my data returned measured values that were more than 90% accurate to the expected values.

The exoplanet I chose is called WASP-19b, it is located around 880 LY away in the constellation Vela. It is a Jupiter-sized planet with an orbital period (year) of less than 19 earth-hours!

This was all surprisingly easy and lots of fun, I highly recommend anyone with an astrophotography setup to give this a go, more than just a fun project, you can submit this to the Exoplanet Transit Database, helping to refine our scientific understanding of exoplanets!

EXPOSURES:

300*30s, Gain 50, T=-15, bin1x1

Exoplanet Transit Database: http://var2.astro.cz/ETD/predictions.php

Light-curve model (O. Pejcha 200:

http://var2.astro.cz/.../FitProcedureDescription...)

AstroImageJ (used for multi-aperture photometry measurements): https://www.astro.louisville.edu/software/astroimagej/

Comments

Histogram

My first detection of an exoplanet (previously known), 



    
        

            Stefan Nebl