Table 3: Very red sources with unusually bright and/or blue near-infrared counterparts identified as candidate post-AGB stars or proto-planetary nebulae.
IRAS H-K K-[12] [12]-[25] VAR Comments

18095+2704 0.26 3.55 1.11 15 Post-AGB star

18520+0533 0.93 3.90 1.76 3 Peculiar OH/IR star

18551+0159 1.66 5.20 1.87 25 Infrared Planetary nebula

19065+0832 0.70 3.17 1.02 98 Non-variable OH/IR star?

19178+1206 0.65 7.89 0.92 1 Non-variable OH/IR star

19200+1035 0.82 1.46 0.61 0 Planetary nebula

19343+2926 1.79 2.15 1.33 0 Bipolar proto-planetary nebula

20160+2734 0.29 -1.04 0.76 0 Semi-regular variable

**Table 3:** Very red sources with unusually bright and/or blue near-infrared counterparts identified as candidate post-AGB stars or proto-planetary nebulae.
IRAS	H-K	K-[12]	[12]-[25]	VAR	Comments
18095+2704	0.26	3.55	1.11	15	Post-AGB star
18520+0533	0.93	3.90	1.76	3	Peculiar OH/IR star
18551+0159	1.66	5.20	1.87	25	Infrared Planetary nebula
19065+0832	0.70	3.17	1.02	98	Non-variable OH/IR star?
19178+1206	0.65	7.89	0.92	1	Non-variable OH/IR star
19200+1035	0.82	1.46	0.61	0	Planetary nebula
19343+2926	1.79	2.15	1.33	0	Bipolar proto-planetary nebula
20160+2734	0.29	-1.04	0.76	0	Semi-regular variable

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Identification of the optical/NIR counterparts
	4 Near infrared photometry
	5 Discussion
	6 Conclusions
	References
	Online Material