This page was assembled to help astrophotographers obtain a starting procedure for hypering film. The data below is intended as a starting point only. You will have to refine your procedure by altering the variables until you acheive the film density of 0.8 over base. For more guidence on this topic, Click Here check out Philip Perkins article on how to measure film density.
Thanks to all who sent me their hypering procedure.
| Name | Film | Temp | Time | Pressure | Altitude | Canister (in/out) | HiVac (Y/N) | Procedure | Forming Mix | Hyper Kit |
|---|---|---|---|---|---|---|---|---|---|---|
| Marco Lorenzi | PJM | 50C | 7.5 Hrs | 14.7 PSI | 164 Ft | In | N | chamber pre-heated, no outgassing, no pre-treatment, temp within +-1°C | 10%H 90%N |
Home Made |
| Bobby Middleton | PJ400 | 50C | 5 Hrs | 4 PSI | 465 Ft | In | N | Low vac unheated dessication for 1 hour, then hyper |
8%H
92%N |
Lumicon |
| Mike Rogers | PJ400 | 50C | 7 Hrs | 3 PSI | 5800 Ft | In | N | Low Vac unheated dessication for 2-3 hours, start heater, when chamber at 40C add forming gas to 2 PSI then up to 3 PSI when chamber at 50C | 8%H 92%N |
Lumicon 300 |
| Philip Perkins | PJM | 40C | 22 Hrs | 20 PSI | 460 Ft | In | N | 3 flushes (evacs to 400 microns / fills to +3 psi) at 40 C then leave in vacuum for 2 hours. 3 further flushes then final fill to +20 psi with forming gas | 8%H 92%N |
Lumicon |
| Kent Kirkley | Tech Pan | 50C | 9 Hrs | 14 PSI | ? Ft | In | Y | 15 Hours Dessication to about 20 Microns at room temperature. Isolate tank from pump and heat to 50C. Introduce forming gas to +14 psi (Lumicon Gauge). Soak and Bake for 9 hours. | 8%H 92%N |
Lumicon 600 |
| Martin C Germano | Tech Pan | 50C | 96-100 Hrs | 3 PSI | 0 Ft | In | N | Vac dessicate for 24 hours at as high a vac as you can pull with hand pump (-26 to -27 psi on guage). Fill with forming gas to +3 psi and heat to 50C for 96-100 hours. Develop at 6-7 minutes in D-19 at 68 deg. | 8%H 92%N |
Lumicon 300 |