Mkn 501 = 1652+398

R.A. (J2000.0)=16 53 52.2

Dec. (J2000.0)=+39 45 37





J band, 4x4 arcmin

Recommended standard stars

star

J

err J

H

err H

K

err K

1

13.498

.004

12.818

.005

12.753

.009

2

10.937

.002

10.374

.004

10.299

.009

3

14.164

.004

13.768

.006

13.808

.016