Technical note for “Mapping PAH sizes in NGC 7023 with SOFIA”

Target: NGC 7023 (also known as the Iris Nebula)
Target Description: Reflection nebula

Instrument: FLITECAM
Filter: FLT_PAH_329
Wavelength: 3.3 µm
Bandwidth: 0.115 µm
Exposure time: 5 minutes
Observation date: February 25, 2014

Instrument: FORCAST
Filter: FOR_F111
Wavelength: 11.1 µm
Bandwidth: 0.95 µm
Exposure time: 40 minutes
Observation date: March 20, 2014

Proposal ID: 02_0056
Program PI: O. Berne
Publication: Croiset et al. 2016, A&A 590, A26

Technical Note
The filters were chosen to include prominent aromatic infrared bands due to emission by Polycyclic Aromatic Hydrocarbons (PAHs).  The FLITECAM filter includes emission due to the C-H stretch mode at 3.3 µm and the FORCAST filter includes emission from the solo out-of-plane bending mode at 11.2 µm.

Share This Page