Toshi Sasaki Home page

Subaru Telescope
NAOJ

Collaborative works at
Kottamia Observatory in Egypt

Sister Telescope of OAO 74”
Middle Telescope Network
over Middle-East and Asia

Access

since 2009/06/25

[Back to Kottamia Report Page] [Back to Toshi's Page] [Back to SasakiHome's Page]

top	Kottamia Observatory	Work Items	Reports on our Visit		CO2 Snow	Hartmann	DomeFlat	Docs	References	bottom
			2009 Jun	2009 Nov

Work Plan to be done during November, 2009
Plan for Work Items expected during Nov.14 - Nov.25 stay at KottamiObservatory (in English; 6 KB) , and the same work plan in Japanese (7 KB)

Photo taken at Kottamia
Nebula M78
Nov. 23, 2009
Nebula M78
Nov. 23, 2009
Work Reports done during November, 2009
- Work summary done during Nov.14 - Nov.25 stay at KottamiObservatory (in English; 9KB) .
- Work summary done during Nov.14 - Nov.25 stay at Kottamia Observatory (in japanese ; 3KB) .
1. adjusted Axial Support system (ASS) of the mirror.
  1. measured Heights of ASS (Initial height measured on Nov.15, 2009 and heights after adjustment on Nov. 17, 2009, shown below .)
  2. enlarged the limiter hole using a bit machine fort ASS points (ASP) #12, #13, and #14 by 1mm, 1mm, and 4mm respectively, shown above (Nov 16).
  3. inserted thin plastic sheet(s) between ASP pads and pads' base for ASP#1, #7, #8, #9, and #10 by 0.18mm, 0.75mm, 1.0mm, 0.93mm, and 0.18mm, respectively.
  4. measured current weights of all the Axial Support System (ASS), shown below
2. checked Newtonian mirror support to be tighted stiffly to the telescope base
3. investigated where Dome Flat screen is attached inside the dome
4. checked Aluminizing proces of the mirror at Kottamia with possible apply of a pre-wet filaments for Aluminizing.
5. measured length for hose from the dome floor to M1 about 7-8m for CO2 snow implements.
6. looked around Laboratory at Kottamia to find good avilable tools there (Nov 23).
7. attached new cramps for M2 covers of Newtonian and Cassegrain.
8. made a wooden support in order to disassemble the newtonian mirror from its cell.
9. checked strange noise from declination-driving motor (Noguchi)
10. measured sizes and positions for Cassegrain buffle.
11. prepared and attached Marks saying "Don't Move AFP" back of M1 cell around three AFP.
12. discussed for shielding plate for opposite side of the telescope tube to Newtonian focus position.
13. checked universality of joint for LN2 cylinder used at Kottamia; possibly universal.
14. some extended discussions with Director Dr. Hamed.

Axial support adjustment

A list of axial heights of Axial Support System after adjusting their height (jpg; 3.2 MB)

A list of weights of Axial Support System measured in Nov, 2009 (jpg; 204KB)

Hartmann Test to evaluate optical performance of the telescope using Hartmann Plate

Hartmann test during Nov, 2009

Observations for Hartmann Test have been done on Nov 23, 2009. Those image data are analyzed to show its Hartmann Constant about 0.3 arcsec, though a slight astigmatism can be seen.

Image at Best Focus
Hartmann Constant 0.319 arcsec
Nov. 23, 2009

Hartmann Test Images with different focus values ,
which show a slight astigmatism.

HartmannConstant(arcsec)		EPT=10, 3377 33 Lyn f=100051 with EXPT=10 sec
FileName	HC-01	HC-02	HC-03	HC-04	HC-05	HC-06	HC-07	HC-08	HC-09	HC-10	HC-11	HC-12	mean
20091123N049.fits	0.294	0.354	0.296	0.251	0.222	0.266	0.250	0.262	0.240	0.241	0.256	0.215	0.262
20091123N050.fits	0.312	0.387	0.331	0.270	0.247	0.287	0.288	0.296	0.271	0.253	0.259	0.246	0.287
20091123N051.fits	0.322	0.403	0.321	0.263	0.249	0.307	0.297	0.305	0.289	0.263	0.268	0.248	0.295
20091123N052.fits	0.310	0.409	0.344	0.266	0.264	0.313	0.319	0.291	0.288	0.290	0.290	0.254	0.303
20091123N053.fits	0.306	0.401	0.318	0.260	0.248	0.282	0.288	0.291	0.273	0.253	0.271	0.254	0.287
20091123N054.fits	0.303	0.391	0.325	0.280	0.264	0.284	0.291	0.277	0.270	0.281	0.294	0.267	0.294
mean	0.308	0.391	0.323	0.265	0.249	0.290	0.289	0.287	0.272	0.264	0.273	0.247	0.288

HC-01:20091123N060.fits HC-02:20091123N061.fits HC-03:20091123N062.fits HC-04:20091123N063.fits HC-05:20091123N064.fits HC-06:20091123N065.fits HC-07:20091123N066.fits HC-08:20091123N067.fits HC-09:20091123N068.fits HC-10:20091123N069.fits HC-11:20091123N070.fits HC-12:20091123N071.fits

HartmannConstant(arcsec)		2009-11-23 09:56 Hartmann ; EXPT=10, 4309 51 UMa(Eastern)reversed f=57714
FileName	HC-01	HC-02	HC-03	HC-04	HC-05	HC-06	HC-07	HC-08	HC-09	HC-10	mean
20091123N072.fits	0.298	0.308	0.319	0.309	0.315	0.333	0.307	0.285	0.318	0.298	0.309
20091123N074.fits	0.363	0.383	0.418	0.417	0.399	0.416	0.396	0.380	0.387	0.382	0.394
20091123N075.fits	0.370	0.390	0.447	0.428	0.422	0.433	0.429	0.402	0.411	0.386	0.412
20091123N076.fits	0.252	0.309	0.342	0.331	0.317	0.339	0.332	0.316	0.329	0.310	0.318
20091123N077.fits	0.280	0.285	0.319	0.318	0.297	0.316	0.307	0.280	0.299	0.280	0.298
20091123N078.fits	0.280	0.282	0.329	0.313	0.302	0.326	0.316	0.300	0.304	0.294	0.305
20091123N079.fits	0.296	0.304	0.332	0.335	0.315	0.333	0.326	0.302	0.315	0.306	0.316
20091123N080.fits	0.294	0.295	0.345	0.318	0.305	0.324	0.327	0.324	0.327	0.313	0.317
20091123N081.fits	0.271	0.290	0.306	0.310	0.301	0.307	0.300	0.283	0.299	0.279	0.295
20091123N082.fits	0.264	0.268	0.299	0.292	0.280	0.288	0.284	0.268	0.278	0.270	0.279
mean	0.297	0.311	0.346	0.337	0.325	0.342	0.332	0.314	0.327	0.312	0.324

HC-01:20091123N085.fits HC-02:20091123N086.fits HC-03:20091123N087.fits HC-04:20091123N088.fits HC-05:20091123N089.fits HC-06:20091123N090.fits HC-07:20091123N091.fits HC-08:20091123N092.fits HC-08:20091123N093.fits HC-10:20091123N094.fits

Photos200911 at Kottamia (click a thumbnail image to view the photos on another TAB page)

Site Sasaki Photos Noguchi Photos

Kottamia Not Available now.
So sorry.

Sasaki's Notes during the visit in Nov, 2009 ( Member only )

Hand-writing Notes during Nov/2009 visit in Kottamia
(PDF file, 2.9 MB ; mixed in Japanese/English)

More precise high-resolutions of its memo is shown by clicking each content in the table below.

	Notes20091114_1 (4.4 MB)	Notes20091114_2 (1.7 MB)	Notes20091115_1 (4.7 MB)	Notes20091115_2 (5.1 MB)
	Notes20091115_3 (5.0 MB)	Notes20091115_4 (2.1 MB)	Notes20091115_5 (4.5 MB)	Notes20091115_6 (5.4 MB)
	Notes20091116_1 (4.8 MB)	Notes20091116_2 (5.1 MB)	Notes20091116_3 (5.1 MB)	Notes20091116_4 (4.9 MB)
Summaried Notes in PDF file (2.9MB)	Notes20091117_1 (4.6 MB)	Notes20091117_2 (5.3 MB)	Notes20091117_3 (1.8 MB)	Notes20091117_3 (5.5 MB)

Sasaki's Diarial memo during stay at Kottamia in Nov. 13 - Nov 26, 2009,
which includes the observation memo also. ( Member only )
(click an item to view the corresponding pages)

	Memo P.1 - P.8 (9.0 MB) Nov.13 - Nov.17 remove M1 cell, adjust Axial Support	Memo P.9 - P.16 (9.3 MB) Nov.17 - Nov.19 attch M1 cell, adjust Nw mirror	Memo P.17 - P.24 (9.2 MB) Nov.19 - Nov.22 adjust Nw with taking images, Holydays in Cairo, check COMA-free center	Memo P.25 - P.32 (9.3 MB) Nov.22 - Nov.23 adjust Nw with taking images and check COMA-free center	Memo P.33 - P.36 (2.3 MB) Nov.23 - Nov.26 Contact with Director Hamed
Summarized in PDF format (5.3MB)

Claw Wrench to loose lock screws for Axial Support Counter-Weights

Parts list in plain text (3KB)

top	Kottamia Observatory	Work Items	Reports on our Visit		CO2 Snow	Hartmann	DomeFlat	Docs	References	bottom
			2009 Jun	2009 Nov

[Back to Kottamia Report Page] [Back to Toshi's Page] [Back to SasakiHome's Page]

Toshi Sasaki's HOME Page on sasakihome.info
Last Modified:
sasaki@naoj.org

Site	Sasaki Photos	Noguchi Photos
Kottamia		Not Available now. So sorry.