Observation by Mike Harlow: Nova Sagittae 2026: Spectrum

Uploaded by

Mike Harlow

Observer

Mike Harlow

Observed

2026 Aug 31 - 20:45

Uploaded

2026 Sep 02 - 06:26

Objects

Spectrum
Nova Sge 2026

Equipment

12inch F/3.6 astrograph
ASI 6200MM CMOS camera, no filter
20cm diameter, 9 degree objective prism

Exposure

15 x 10 seconds

Location

Ipswich, UK

Target name

Nova Sge 2026

Title

Nova Sagittae 2026: Spectrum

About this image

Quite poor sky conditions so not the best quality but it does show a dramatic change from the previous spectrum on 25th August. Very broad emission lines on a much weaker continuum. Can be compared to David Cejudo's spectrum from the night before.

Also interesting to compare with professional spectra from ATel#18022.

Files associated with this observation

Nova_Sagittae_20260831.jpg (601.1 kB)

Like this image

Callum Potter, Jeremy Shears, Dominic Ford, James Weightman, Robin Leadbeater, Andy Wilson, Graham Winstanley

Comments

Robin Leadbeater, 2026 Sep 03 - 15:09 UTC

A digitised and wavelength calibrated version generated from this image, compared with one taken by Francois Teyssier close in time can be seen in the forum here

Jeremy Shears, Mike Harlow

Mike Harlow, 2026 Sep 04 - 06:21 UTC

Thanks Robin,

I did post to the forum on this but it disappeared...still forum problems...!

Anyway, I will continue towards calibrating my spectra so they are suitable for the database. In the mean time, Nigel Evans has derived the dispersion equation for my system so I can measure wavelength for any pixel value. Very useful for planetary nebulae where there is an image rather than a line.

Mike.

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