› Forums › Spectroscopy › DSLR spectra Processing in ISIS › Barlow with Alpy and DSLR
6 February 2018 at 4:48 pm
#579074
![](https://britastro.org/wp-content/uploads/2017/12/picture-8167-1513728374-80x80.jpg)
Participant
Thanks Robin, that’s really useful advice. I do have the Alpy barlow. I changed the pixel size as you suggested and it worked. RMS now 0.12. John