OBSERVATORY DATABASE: Administration

* Observatory sign: sl = Stara Lesna sp = Skalnate Pleso ls = Lomnicky Stit ro = Roztoky hl = Hlohovec on = Ondrejov gr = Kryonerion

* Julian date:
This is the date from which are given values valid.

Note:
Enter here a short note describing the changes.

* Photomultplier type:
e.g. EMI 6256B

* Diaphragms:

No. 1:	No. 2:	No. 3:	No. 4:	No. 5:
No. 6:	No. 7:	No. 8:	No. 9:	No. 10:

Enter the diapragm diameter in arc seconds in these fields.
At least one (the first) diaphragm characteristics must be set!

* Filters:

No.	sign	1st ext. coef.	2nd ext. coef.
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:

Enter the filters characteristcs:

• sign U = Johnson's U, B = Johnson's B, etc.; u = Stromgren's u
• 1st ext. coef. seasonal extinction coefficients (first order)
• 2nd ext. coef. seasonal extinction coefficients (second order)

* UBV transformation coefficients:
cV
cBV
cUB
Explanation: the transformation equations are
V-v = cV × (B-V)
B-V = cBV × (b-v)
U-B = cUB × (u-b)
where u. b, v denote instrumental magnitudes and U, B, V international Johnson's magnitudes

* Database login:
* password:
DATE: 2025-05-10 (yyyy-mm-dd)