Closing down the INT

See for full details Chapter .

1. TV Camera(s) and Autoguider OFF.
2. Press ZP to move telescope to zenith.
3. Close PRIMARY and SECONDARY mirror covers IN THAT ORDER.
4. Switch over to Engineering Mode.
5. Close dome shutters.
6. Switch off dome fans; replace covers.
7. EXTRACTOR fan off.
8. INPUT fan off.
9. Close the Finder Cover.
10. Move Telescope to Park Access position.
11. (Cassegrain only) Replace Primary Mirror Plug.
12. (Cassegrain only) Move Telescope to Zenith under computer control.
13. Press the EMERGENCYSTOP button.
14. Switch Oil Pump OFF.
15. Top up the Cryostat(s) with Liquid Nitrogen.
16. Check/close dome access doors.
17. Close down Telescope Control Software.
18. Shutdown ADAM (unless a flatfield is being taken).
19. Complete Log Books.