Logbook Optics-Setup-Mirca-Apr2018

Enter comments in reverse time order

Date	Who did it?	Action	Comments	Documents
2018-05-09	Tomohiro, Koji	special IFP assembly, rack preparation	We first prepared the mirror racks that will be transported tomorrow. A mirror on the telescope will be exchanged, so we needed to replace a spare (one of two) with a more suitable one. Then we finalized several special IF plates and packed them. We will bring them to ORM tomorrow, together with mirrors.
2018-05-07	Tomohiro, Koji, Toni	special IFP assembly	We finished exchanging nuts (and also screws) of all the special IF plates (from normal nuts to lock nuts). We selected several plates that will be needed first to install 5 mirrors inside the first half of 100 mirrors. Then, we finished assembly of the selected plates, including the mono-variant one that needs an additional reinforcement. We packed them and Toni brought them to ORM for tomorrow.
2018-04-23	Martin, Tomohiro	special IFP assembly	We finished attachment of tube spacers for almost all the 39 so-called "normal special IF plates". Then we finished assembling and the milling parts and leveling actuators for all the "double-variant special IF plates".
2018-04-20	Martin, Satoshi, Tomohiro	CMOS camera setup & special IFP assembly	We finished CMOS setups in Mirca and packing. Then we started special IFP assembly. We finished labeling, attachment of milling parts to actuators and tube spacers for almost all the 39 so-called "normal special IF plates".
2018-04-19	Martin, Satoshi, Tomohiro	CMOS camera setup	We finished camera angle adjustment for 43 cameras (in total 198). We also shielded bare connectors, put plastic tubes for ~ 100 CMOS cameras and replaced azimuth rotation screws with proper ones.
2018-04-18	Satoshi, Tomohiro	CMOS camera setup	We finished camera angle adjustment for 49 cameras (in total 155). We also shield bare connectors, put plastic tubes for many CMOS cameras.
2018-04-17	Koji, Satoshi, Tomohiro	CMOS camera setup	We took safety course for working for installing mirrors on site under the local company (Casana). We finished camera angle adjustment for 39 cameras (in total 106). We also shielded bare connectors with small plastic bags, inserted plastic tubes for ventilation, replaced azimuth rotation screws with proper ones and started packing for some cameras.
2018-04-16	Satoshi	CMOS camera setup	We finished camera angle adjustment for 13 cameras (in total 67).
2018-04-12	Satoshi	CMOS camera setup	We finished camera angle adjustment for 44 cameras (in total 54).
2018-04-11	Satoshi	CMOS camera setup	We finished camera angle adjustment for 40 cameras (in total 100). I found angle calculation was not correct. I modified the table and finished adjustment for 10 cameras.
2018-04-10	Satoshi	CMOS camera setup	We finished camera angle adjustment for 43 cameras (in total 60).
2018-04-09	Koji, Satoshi	CMOS camera setup	We finished attaching CMOS holders for all the 198 cameras. We started camera angle adjustment and finished 17 cameras (in total 17).
2018-04-08	Koji, Satoshi	CMOS camera setup	We put loctite on screws of the lens mount for all the 198 cameras. Then we started attaching CMOS holders and finished ~100. We also made a setup for CMOS angle adjustment.
2018-04-07	Satoshi	CMOS camera setup	I finished labeling, adjusting lens, IP configuration and IP address table for 198 CMOS cameras.
2018-04-06	Satoshi	arrival in La Palma

Trouble Shooting

2018/04/20

- We broke one screw of a camera (-7,+7) which is screwed to fix azimuth rotation after the replacement. Maybe it was because of too much force with the wrench. We could not find a spare CMOS holder in Mirca, so decided to leave it for a while until a spare is available.

2018/04/19

- We spoiled one plus-shaped-head screw and could not loosen and replace it. We replaced the CMOS holder itself with the one (0,+8) we would not install for a while because we could not find a spare one.

- We could insert a CMOS camera which has even an extreme vertical inclined angle (~12deg, in our measurement) into the cutout of a mirror.

- I noticed that in my CMOS angle adjustment setup, the distance between the scale sheet and the camera was 1.3 m, which was not the intended number (1.2 m). This caused ~8 % (0.1/1.2) error for CMOS angles, but I think it is small compared to the FOV of CMOS (±5°,±4°).

2018/04/11

- I calculated CMOS angles as the laser spot was at the center of focal plane, which was wrong. I recalculated as it is 1.5 m down from the center and restarted adjustment again.

2018/04/09

- Some CMOS cameras have a little rotated images of the scale sheet for angle adjustment. It maybe comes from accuracy of mounting cameras by company.

- Some CMOS cameras have a few dark spots (probably loctite) on their images.

2018/04/07

- We had one camera (1/198) which could not be seen from AMC PC.

Tips

2018/04/23

- For leveling of the "2-variant special IF plates", we inserted a fixed point + some spacers at the center of the plate to make it horizontal.

2018/04/07

- When adjusting lens, we put loctite on pins for focus, but not for pins for iris.

2018/04/08

- CMOS camera shields are very tight. We cannot screw some of them completely. In that case you can make use of a CMOS holder to fix them tightly.

- Put loctite on screws of lens mount slowly otherwise loctite can be sticked on the lenses or CMOS sensors.