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The ALPY 200 Faint Object Spectrograph




In 2014 I modified my ALPY spectrograph for measuring faint objects at lower resolution, replacing the standard 600 l/mm grism with a 200l/mm grism.  Click on the links below for more information

2014     Original poster paper describing the ALPY 200 modification, presented at ASPEKT 2014 in Cologne Germany and the BAA VSS meeting in York UK

2016    ALPY 200 used to confirm and classify supernova SN 2016bme, the first to be offically classified spectroscopically using amateur equipment.

2018     Talk given at a BAA meeting describing the development and use of the Star Analyser and ALPY 200 for supernova classification

2019   Talk on supernova classification using the ALPY 200 given at the Royal Astronomical Society National Astronomy Meeting

2016 -
  List of transients classified spectroscopically using the ALPY in the IAU Transient Name Server, many with the ALPY 200 version

2021     ALPY 200 used to measure spectra of Three Quasars at z >4.3, the faintest and most distant objects measured spectroscopically using amateur equipment

2023    ALPY 200 spectrum of supernova SN 2023vxt. At 570Mly and g mag 18.6, the faintest and most distant supernova recorded to date

              Further interesting observations using the ALPY 200


 These spectra and others I have recorded can be downloaded from the BAA spectroscopy database




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