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Re: Russian Sextants
From: Jean-Philippe Planas
Date: 2006 Apr 4, 13:32 -0700

Dear Alexandre,

Very surprisingly I receive today only your answer (15 November 2005!!!!) in this post along with a batch of 54 old NavList posts that had been lost for some reason.

Please receave my appologize for not having been able to answer previously, but this was completely out of my reach. We have been betrayed by the Web or the Navlist system.

Back to your questions.

My SNO-T was produced in 1986.

Here is the correction table:

0-0

5-+9

10-+9

15--5

20-+9

25-+20

30-+7

35-+9

40-+24

45-+9

50-+6

55--+30

60+16

65+12

70-+16

75-+11

80-+14

85-+20

90-+15

95-+19

100-+22

105-+30

110-+18

115-+23

120-+24

Here are the missing results !!

Sun measurements taken with art Horizon

date	heure	Hm	IE=+2	:2	Refraction+PA	Hmc	Hc	delta
11/06/2005	10h 31 24	119 45,8	119 47,8	59d 53,8	59d 53,3		59d53,9	-0.6
	10h33 16	120 08,4	120 10,4	60d 05,1	60d 04,6		60d05,3	-0.7
	10h34 30	120 23,55	120 25,55	60d 12,7	60d 12,2		60d12,8	-0.6
	10h36 40	120 49,45	120 51,45	60d 25,6	60d 25,1		60d25,6	-0.5
	10h38 30	121 11,5	121 13,5	60d 36,65	60d36,25		60d36,3	0.05
	10h40 06	121 29,9	121 31,1	60d 45,45	60d 45,05		60d45,4	-0.35
	14h09 39	105 03,8	105 05,8	52d 32,8	52d 32,2		52d32,2	-0.1
17/06/2005	8h35 44	87 57,8	87 59,8	43 59,9	43 58,9		43 59,1	-0.2
	8h53 06	93 26,25	93 28,25	46 44,26	46 43,36		46 42,8	-0.56
	8h56 58	94 37,75	94 39,75	47 19,88	47 19,08		47 18,8	0.28
	9h00 14	95 38,4	95 40,4	47 50,2	47 49,4		47 48,9	0.5
	9h04 35	96 57,5	96 59,5	48 29,75	48 28,95		46 28,8	0.15
	9h06 04	97 24,8	97 26,8	48 43,4	48 42,6		48 42,4	0.2
	9h07 09	97 44,7	97 46,7	48 53,35	48 52,55		48 52,2	0.35
	9h19 44	101 30,55	101 32,55	50 46,28	50 45,38		50 45,2	0.18
	9h20 52	101 50,4	101 52,4	50 56,2	50 55,3		50 55,2	0.1
	9h22 04	102 12,35	102 14,35	51 07,18	51 06,28		51 05,8	0.48
	9h23 55	102 44,5	102 46,5	51 23,25	51 22,35		51 22,0	0.35
	9h25 24	103 09,1	103 11,1	51 35,55	51 34,65		51 34,5	0.15
	9h26 35	103 30,5	103 32,5	51 46,25	51 45,35		51 45,5	-0.15
	9h27 41	103 49,7	103 51,7	51 55,85	51 54,95		51 54,8	0.15
	9h39 25	107 09,5	107 11,5	53 35,75	53 35,15		53 34,8	0.35
	10h07 45	114 36,55	114 38,55	57 19,28	57 18,78		57 18,9	-0.12
	10h19 03	117 18,9	117 20,9	58 40,45	58 39,95		58 39,7	0.25
	10h34 14	120 37,6	120 39,6	60 19,8	60 19,3		60 18,6	0.7
	16h01 00	71 01,6	71 03,6	35 31,8	35 30,5		35 30,6	0.10
	16h04 05	70 01,1	70 03,1	35 01,505	35 00,205		35 00,2	0
	16h05 46	69 28,0	69 30,0	34 45,0	34 43,7		34 43,6	0.1
	16h17 05	65 44,85	65 46,85	32 53,425	32 52,025		32 51,9	0.125
	16h35 05	59 49,25	59 51,25	29 55,625	29 54,025		29 54,0	0
	16h40 25	58 03,8	58 05,8	29 02,9	29 01,2		29 01,4	-0.2
	16h45 47	56 17,8	56 19,8	28 09,9	28 08,1		28 08,5	-0.4
	16h52 31	54 04,9	54 06,9	27 03,45	27 01,55		27 02,2	-0.65
18/06/2005	16h38 00	58 56,7	58 58,7	29 29,35	29 27,65		29 28,3	-0.65
	16h41 48	57 42,0	57 44,0	28 52,0	28 50,3		28 50,8	-0.7
	16h43 23	57 11,3	57 13,3	28 36,65	28 34,95		28 35,2	-0.25
19/06/2005	10 56 50	124 42,35	124 44,35	62 22,175	62 21,775		62 21,3	-0.475
	11 10 02	126 34,0	126 36,0	63 18,0	63 17,6		63 17,1	0.5
	12 14 19	128 33,1	128 35,2	64 17,6	64 17,2		64 17,2	0.00
	12 16 48	128 23,2	128 25,2	64 12,6	64 12,2		64 12,0	0.2
	12 28 42	127 19,35	127 21,35	63 40,675	63 40,275		63 39,8	0.475
	13 32 00	115 56,8	115 58,8	57 59,4	57 58,9		57 58,2	0.7
	13 34 31	115 18,3	115 20,3	57 40,15	57 39,65		57 40,0	-0.35
	13 44 25	112 49,8	112 51,8	56 25,9	56 25,3		56 25,8	-0.5
	13 58 46	109 03,6	109 05,6	54 32,8	54 32,2		54 32,0	0.2
	14 06 56	106 46,75	106 48,75	53 24,375	53 23,775		53 24,2	-0.425
	15 43 20	76 59,8	77 01,8	38 30,9	38 29,7		38 29,9	-0.2
	15 47 59	75 30,0	75 32,0	37 46,0	37 44,8		37 44,4	0.4
	16 01 10	71 09,85	71 11,85	35 35,925	35 34,625		35 34,7	-0.075
	16 02 07	70 52,2	70 54,2	35 27,1	35 25,8		35 25,4	0.4
	16 03 00	70 33,75	70 35,75	35 17,875	35 16,575		35 16,6	-0.025
24/06/2005	9 41 29	107 20,0	107 22,0	53 41,0	53 40,4		53 40,3	0.1
	9 45 34	108 27,8	108 29,8	54 14,9	54 14,3		54 14,2	0.1
	9 47 44	109 04,4	109 06,4	54 33,2	54 32,6		54 31,9	0.7
	11 15 20	127 00,4	127 02,4	63 31,2	63 30,8		63 30,8	0
	12 03 19	129 04,3	129 06,3	64 33,15	64 32,75		64 33	-0.25
	12 06 30	128 58,0	129 00,0	64 30,0	64 29,6		64 29,7	-0.1
	12 08 27	128 52,8	128 54,8	64 27,4	64 27		64 27,2	-0.2
	13 05 13	121 54,7	121 56,7	60 58,35	60 57,85		60 57,7	0.15
	13 07 11	121 32,0	121 34,0	60 47,0	60 46,5		60 46,3	0.2
	13 13 09	120 19,2	120 21,2	60 10,6	60 10,1		60 10,4	-0.3
	14 13 24	105 14,2	105 16,2	52 38,1	52 37,4		52 37,2	0.2
	14 15 46	104 33,6	104 35,6	52 17,8	52 17,1		52 16,9	0.3
	15 41 50	77 48,4	77 50,4	38 55,2	38 54,1		38 53,8	-0.3
	15 43 33	77 14,1	77 16,1	38 38,05	38 36,85		38 37,0	-0.15
02/07/2005	9 42 36	106 34,1	106 36,1	53 18,05	53 17,45		53 17,5	-0.05
	10 12 46	114 26,8	114 28,8	57 14,4	57 13,9		57 13,7	0.2
	10 14 25	114 50,6	114 52,6	57 26,3	57 25,8		57 25,7	0.1
	10 15 34	115 07,8	115 09,8	57 34,9	57 34,4		57 33,9	0.5
	10 30 35	118 32,2	118 34,2	59 17,1	59 16,6		59 16,0	0.6
	10 32 35	119 00,8	119 02,8	59 31,4	59 30,9		59 30,9	0
	10 58 33	123 46,0	123 48,0	61 54,0	61 53,6		61 53,2	0.4
	11 08 31	125 13,65	125 15,65	62 36,825	62 36,425		62 36,8	-0.375
	11 19 46	126 33,35	126 35,35	63 17,675	63 17,275		63 17,0	0.275
	12 27 00	126 55,9	126 57,9	63 28,95	63 28,55		63 28,3	0.25
	12 28 36	126 46,4	126 48,4	63 24,2	63 23,8		63 23,7	0.1
	12 33 00	126 20,0	126 22,0	63 11,0	63 10,6		63 10,0	0.6
	12 34 22	126 10,6	126 12,6	63 06,3	63 05,9		63 05,4	0.5
	12 37 56	125 45,1	125 47,1	62 53,55	62 53,15		62 52,8	0.35
	12 51 43	123 48,75	123 50,75	61 55,375	61 54,975		61 54,8	0.175
	12 53 10	123 34,5	123 36,5	61 48,25	61 47,85		61 47,9	-0.05
	13 12 22	120 07,2	120 09,2	60 04,6	60 04,1		60 03,6	0.5
	13 13 38	119 51,6	119 53,6	59 56,8	59 56,3		59 56,0	0.3
	13 18 28	118 51,1	118 53,1	59 26,55	59 26,05		59 25,9	0.15
	13 19 40	118 36,25	118 38,25	59 19,125	59 18,625		59 18,3	0.325
	14 00 07	108 44,45	108 46,45	54 23,225	54 22,625		54 22,2	0.425
	14 01 32	108 20,6	108 22,6	54 11,3	54 10,7		54 10,7	0
	14 08 44	106 22,0	106 24,0	53 12,0	53 11,3		53 11,3	0
	14 10 13	105 57,6	105 59,6	52 59,8	52 59,1		52 58,9	0.2
	15 08 34	88 25,7	88 27,7	44 13,85	44 12,95		44 13,0	-0.05
	15 16 58	85 46,0	85 48,0	42 54,0	42 53,0		42 53,0	0
	15 18 20	85 19,4	85 21,4	42 40,7	42 39,7		42 39,9	-0.2
	15 46 14	76 19,35	76 21,35	38 10,675	38 09,475		38 09,5	-0.025
	15 47 20	75 57,6	75 59,6	37 59,8	37 58,6		37 58,8	-0.2
17/07/2005	08 02 15	72 17,8	72 19,8	36 09,9	36 08,6		36 09,0	-0.4
	08 04 00	72 53,55	72 55,55	36 27,775	36 26,475		36 26,0	0.475
	08 41 43	84 56,5	84 58,5	42 29,25	42 28,25		42 28,2	0.050
	08 43 05	85 22,0	85 24,0	42 42,0	42 41,0		42 41,0	0
	08 44 23	85 46,1	85 48,1	42 54,05	42 53,05		42 53,2	0.15
	08 45 28	86 07,25	86 09,25	43 04,625	43 03,625		43 03,4	0.225
	09 36 30	101 18,6	101 20,6	50 40,3	50 39,6		50 39,3	0.3
	09 38 38	101 53,85	101 55,85	50 57,925	50 57,225		50 57,1	0.125
	09 41 22	102 40,0	102 42,0	51 21	51 20,3		51 19,7	0.6
	09 43 10	103 08,9	103 10,9	51 35,45	51 34,75		51 34,5	0.25
	10 19 22	112 17,8	112 19,8	56 09,9	56 09,3		56 08,8	0.5
	10 20 54	112 39,2	112 41,2	56 20,6	56 20,0		56 19,2	0.8
	10 22 14	112 56,5	112 58,5	56 29,25	56 28,75		56 28,2	0.55
	10 28 20	114 16,25	114 18,25	57 09,125	57 08,625		57 08,4	0.225
	10 32 45	115 12,2	115 14,2	57 37,1	57 36,6		57 36,3	0.3
	10 34 58	115 37,6	115 39,6	57 49,8	57 49,3		57 49,9	-0.6
	11 04 38	120 48,9	120 50,9	60 25,45	60 24,95		60 24,6	0.35
	11 07 32	121 12,15	121 14,15	60 37,075	60 36,575		60 36,7	-0.125
	11 09 00	121 24,6	121 26,6	60 43,3	60 42,8		60 42,5	0.3
	11 12 04	121 47,8	121 49,8	60 54,9	60 54,4		60 54,3	0.1
	11 35 13	123 58,0	124 00,0	62 00,0	61 59,6		61 59,7	-0.1
	11 37 05	124 05,0	124 07,0	62 03,5	62 03,1		62 03,1	0
	11 49 14	124 34,5	124 36,5	62 18,25	62 17,85		62 18,0	-0.15
	11 50 20	124 36,5	134 38,5	62 19,25	62 18,85		62 18,7	0.15
	11 51 35	124 37,75	124 39,75	62 19,875	62 19,475		62 19,4	0.075
	11 52 40	124 38,75	124 40,75	62 20,375	62 19,975		62 19,9	0.075
	11 53 49	124 39,6	124 41,6	62 20,8	62 20,4		62 20,3	0.1
	11 55 56	124 40,8	124 42,8	62 21,4	62 21,0		62 20,8	0.2
	11 57 21	124 40,6	124 42,6	62 21,3	62 20,9		62 20,8	0.1
	11 59 14	124 40,3	124 42,3	62 21,15	62 20,75		62 20,7	0.05
	12 00 33	124 39,35	124 41,35	62 20,675	62 20,275		62 20,4	-0.125
	12 02 12	124 38,6	124 40,6	62 20,3	62 19,9		62 19,8	0.1
	12 35 00	122 40,45	122 42,45	61 21,225	61 20,825		61 20,6	0.225
	12 38 10	122 19,75	122 21,75	61 10,875	61 10,375		61 10,3	0.075
	12 42 10	121 50,5	121 52,5	60 56,25	60 55,75		60 56,1	-0.35
	12 58 17	119 34,25	119 36,25	59 48,125	59 47,625		59 47,4	0.225
	13 01 14	119 05,25	119 07,25	59 33,625	59 33,125		59 33,0	0.125
	13 36 58	111 55,05	111 57,05	55 58,525	55 57,925		55 57,6	0.325
	13 39 14	111 23,1	111 25,1	55 42,55	55 41,95		55 41,7	0.25
	14 13 40	102 33,3	102 35,3	51 17,65	51 16,95		51 17,0	-0.05
	14 15 42	101 58,7	102 00,7	51 00,35	50 59,65		51 00,1	-0.45
	14 34 02	96 45	96 47	48 23,5	48 22,7		48 23,3	-0.6
	14 35 40	96 16,8	96 18,8	48 9,4	48 08,6		48 09,0	-0.4
	15 08 14	86 24,45	86 26,45	43 13,225	43 12,225		43 12,5	-0.275
	15 09 50	85 54,55	85 56,55	42 58,275	42 57,275		42 57,5	-0.225
	15 11 05	85 31,15	85 33,15	42 46,575	42 45,575		42 45,7	-0.125
	15 31 22	79 05,85	79 07,85	39 33,925	39 32,825		39 32,8	0.025
	15 33 08	78 30,8	78 32,8	39 16,4	39 15,3		39 15,8	-0.5
	16 02 46	68 54,75	68 56,75	34 28,375	34 26,975		34 27,4	-0.425
	16 04 29	68 20,5	68 22,5	34 11,25	34 09,85		34 10,5	-0.65
	16 05 26	68 02,35	68 04,35	34 02,175	34 00,775		34 01,2	-0.425
	16 06 39	67 38,0	67 40,0	33 50,0	33 48,6		33 49,2	-0.6
	16 11 31	66 02,6	66 04,6	33 02,3	33 00,9		33 01,4	-0.5
	16 14 21	65 06,3	65 08,3	32 34,15	32 32,65		32 33,4	-0.75
	16 16 10	64 30,9	64 32,9	32 16,45	32 14,95		32 15,5	-0.55
	16 18 33	63 44,4	63 46,4	31 53,2	31 51,7		31 52,0	-0.3
								0.019
								0.348

I bought an SNO-M because although not as sophisticated as the SNO-T, they are interesting sextants to work with. Their design is close the the german C-Plath back in tha end of the 30ies and also very close to that of the ASTRA IIIB. They are also not so expensive. And it s interesting to make comparison with SNO-T results.

Here are some Star-Star samples

Mesurement Almanach Delta (in minutes)

35d02,7	35d03,467	-0.678
35d03,2	35d03,967	-0.178
35d03,6	35d04,367	0.222
35d02,4	35d03,167	-0.978
35d03,05	35d03,817	-0.328

54d02,2	54d03,32	-0.754
54d02,8	54d03,92	-0.154
54d02,8	54d03,92	-0.154

35d03,3	35d04,15	0.001
35d02,9	35d03,75	-0.39
35d02,6	35d3,45	-0.69
35d03,0	35d03,85	-0.29

54d02,6 54d03,59 -0.48

54d02,3 54d03,29 -0.78

54d02,8 54d03,78 -0.28

35d02,7	35d03,544	-0.526
35d03,3	35d04,14	0.074
35d02,5	35d03,344	-0.726
35d02,85	35d03,694	-0.376

54d02,5	54d03,542	-0.438
54d03,1	54d04,142	0.162
54d02,9	54d03,942	-0.038
54d02,4	54d03,442	-0.538

13d16,8	13d17,0		-0.55
13d16,4	13d16,8		-0.75

58d48,0	58d49,12		0.49
58d48,0	58d49,12		0.49

12d00,75	12d00,95		-0.82
12d01,15	12d01,35		-0.42

12d01,3	12d01,5	-0.05
12d01,05	12d01,25	-0.3
12d01,1	12d01,3	-0.25
12d01,4	12d01,6	0.05
12d00,8	12d01,0	-0.55

28d41,0	28d41,8	-0.7
28d41,1	28d41,9	-0.6
28d40,9	28d41,7	-0.8
28d40,55	28d41,45	-1.1
28d41,2	28d42,1	-0.4

28d41,2	28d41,9	-0.6
28d40,85	28d41,55	-0.95
28d41,2	28d41,9	-0.6
28d40,75	28d41,45	-1.05
28d41,3	28d42,0	-0.5

28d40,8	28d41,45	-1.05
28d41,2	28d41,85	-0.65
28d40,9	28d41,55	-0.95

43d24,2	43d29,2	2.25
43d22,45	43d27,47	0.5
43d22,8	43d27,8	0.84

55dd55,9	55d58,2	-0.65
55d55,55	55d57,85	-1
55d55,6	55d57,9	-0.95
55d55,55	55d57,85	-1

43d20,55	43d26,4	-0.55
43d20,8	43d26,65	-0.3
43d21,65	43d27,5	0.1

28d41,2	28d41,95	-0.55
28d41,	28d41,75	-0.75
28d41,2	28d41,95	-0.55

28d41,2	28d41,90	-0.6
28d40,9	28d41,60	-0.9
28d41,1	28d41,80	-0.7
28d40,9	28d41,60	-0.9
28d41,0	28d41,70	-0.8
28d40,75	28d41,45	-1.05

Hope it can give you some infos your might be looking for and pllease receive my appologize again.

Best regards and yours respectfully

JPP.

Alexandre E Eremenko <eremenko@MATH.PURDUE.EDU> wrote:

Dear Jean-Philippe,

I am a SNO-T user for more than one year,
and I am VERY interested in sharing experience.
Most of my observations are also "backyard",
more precisely, balcony observations.
(But I also have some Atlantic observations taken from
a small boat). These include
Sun artificial horizon altitudes, Lunars,
and star-to-star measurements. And few Sun measurements
in the Atlantic.

And also all sorts of errors adjustments and corrections.
So please send me your numbers.
I am interested in any numbers from index correction to Sun
art horizon altitudes
to Lunar distances.

Also include the year made and factory correction table of your SNO-T.

> Here are the results of some measurements

Where are the results?
I found no attachment in your message.
(As I understand the general policy of this list is to discourage
attachments. I think this is a wise policy.
Can you include your numbers in an ordinary text message?
Or send me the attachments off the list.

(In general I prefer not to read attachments written in proprietary
formats of Bill Gates and Co, but .pdf is OK.)
But if you don't know how to (or don't want to) send anything but some
Bill Gates Windose format, like Excel or MS-Word or whatever,
I will make an exception from this general policy;
I have a special Windose computer for this:-)

> All sights were taken with the 6x Astronomical (inverting) telescope.

I find this inverting scope very much superior to
any other scope I ever tried.
I am not so much satisfied with "the rest" of my SNO-T:-(
(Especially with the "trommel").

> I have practiced less with the SNO-M

May I ask you why did you buy an SNO-M after an SNO-T?
(It is a general agreement, even among the Russians) that SNO-M
is by far inferior to SNO-T).

> The SNO-T allows a drum scale reading of 0.1' (do you agree?)

Absolutely. But unfortunately, my SNO-T precision is very far from that.

> in order to find GMT Time and had very widespread results, from 18s to a
> couple of minutes!

Lunar distances are tricky. Very much depends of how large the distance
is.
But I want to see your star-star measurements with SNO-T first of all.

(And I am ready to send you hundreds of my observations with SNO-T
and all other info about it I have).

Alex.

JPP

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