› Forums › Variable Stars › PNV J00425895+4126279 › IR part of the spectrum
12 September 2017 at 4:50 pm
#578556
![](https://britastro.org/wp-content/uploads/2016/11/picture-146-1478110706-80x80.jpg)
Participant
The spectrum beyond ~7700A (~pixel 500) is unusable in its current state because of the severe optical etalon type interference fringes, common in IR spectrographs. A careful flat correction would be needed to remove them.
Robin